( Source: Ibn Kathir )
(68) And when they entered according to their father's advice, it did not avail them in the least against (the Will of) Allah, it was but a need of Ya'qub's (Jacob) inner-self which he discharged. And verily, he was endowed with knowledge because We had taught him, but most men know not.
(And verily, he was endowed with knowledge because We had taught him,) he had knowledge that he implemented, according to Qatadah and Ath-Thawri. Ibn Jarir said that this part of the Ayah means, he has knowledge that We taught him.
Allah states that when Yusuf's brothers went in before him along with his full brother Binyamin, he invited them to a place of honor as privileged guests. He granted them gifts and generous hospitality and kindness. He met his brother in confidence and told him the story of what happened to him and that he was in fact his brother.
(69) And when they went in before Yusuf (Joseph), he betook his brother (Benjamin) to himself and said: "Verily!I am your brother, so grieve not for what they used to do."
He said to him,
After Yusuf supplied them with their provisions, he ordered some of his servants to place his silver bowl (in Binyamin's bag), according to the majority of scholars. Some scholars said that the king's bowl was made from gold. Ibn Zayd added that the king used it to drink from, and later, measured food grains with it since food became scarce in that time, according to Ibn `Abbas, Mujahid, Qatadah, Ad-Dahhak and `Abdur-Rahman bin Zayd. Shu`bah said that Abu Bishr narrated that Sa`id bin Jubayr said that Ibn `Abbas said that the king's bowl was made from silver and he used it to drink with. Yusuf had the bowl placed in Binyamin's bag while they were unaware, and then had someone herald.
(70) So when he had furnished them forth with their provisions, he put the (golden) bowl into his brother's bag, then a crier cried: "O you (in) the caravan! Surely, you are thieves!"
(O you (in) the caravan! Surely, you are thieves!) They looked at the man who was heralding this statement and asked him,
(71) They, turning towards them, said: "What is it that you have missed?"
("What is it that you have lost'' They said: "We have lost the bowl of the king...''), which he used to measure food grains,
(72) They said: "We have missed the (golden) bowl of the king and for him who produces it is (the reward of) a camel load; I will be bound by it."
(73) They said: "By Allah! Indeed you know that we came not to make mischief in the land, and we are no thieves!"
(74) They [Yusuf's (Joseph) men] said: "What then shall be the penalty of him, if you are (proved to be) liars."
`(What then shall be the penalty of him), in reference to the thief, if it came out that he is one of you,'
(if you are (proved to be) liars) They asked them, `What should be the thief's punishment if he is one of you'
(75) They [Yusuf's (Joseph) brothers] said: "The penalty should be that he, in whose bag it is found, should be held for the punishment (of the crime). Thus we punish the Zalimun (wrong-doers, etc.)!"
(They said: "His penalty should be that he, in whose bag it is found, should be held for the punishment. Thus we punish the wrongdoers!'') This was the law of Prophet Ibrahim, peace be upon him, that the thief be given as a slave to the victim of theft. This is what Yusuf wanted, and this is why he started with their bags first before his brother's bag, to perfect the plot.
(76) So he [Yusuf (Joseph)] began (the search) in their bags before the bag of his brother. Then he brought it out of his brother's bag. Thus did We plan for Yusuf (Joseph). He could not take his brother by the law of the king (as a slave), except that Allah willed it. (So Allah made the brothers to bind themselves with their way of "punishment, i.e. enslaving of a thief.") We raise to degrees whom We please, but over all those endowed with knowledge is the All-Knowing (Allah).
(68) And when they entered according to their father's advice, it did not avail them in the least against (the Will of) Allah, it was but a need of Ya'qub's (Jacob) inner-self which he discharged. And verily, he was endowed with knowledge because We had taught him, but most men know not.
(And verily, he was endowed with knowledge because We had taught him,) he had knowledge that he implemented, according to Qatadah and Ath-Thawri. Ibn Jarir said that this part of the Ayah means, he has knowledge that We taught him.
Yusuf comforts Binyamin
Allah states that when Yusuf's brothers went in before him along with his full brother Binyamin, he invited them to a place of honor as privileged guests. He granted them gifts and generous hospitality and kindness. He met his brother in confidence and told him the story of what happened to him and that he was in fact his brother.
(69) And when they went in before Yusuf (Joseph), he betook his brother (Benjamin) to himself and said: "Verily!I am your brother, so grieve not for what they used to do."
He said to him,
`(grieve not) nor feel sad for what they did to me.' He ordered Binyamin to hide the news from them and to refrain from telling them that the `Aziz is his brother Yusuf. He plotted with him to keep him in Egypt enjoying honor and great hospitality.
Yusuf had His Golden Bowl placed in Binyamin's Bag; a Plot to keep Him in Egypt
After Yusuf supplied them with their provisions, he ordered some of his servants to place his silver bowl (in Binyamin's bag), according to the majority of scholars. Some scholars said that the king's bowl was made from gold. Ibn Zayd added that the king used it to drink from, and later, measured food grains with it since food became scarce in that time, according to Ibn `Abbas, Mujahid, Qatadah, Ad-Dahhak and `Abdur-Rahman bin Zayd. Shu`bah said that Abu Bishr narrated that Sa`id bin Jubayr said that Ibn `Abbas said that the king's bowl was made from silver and he used it to drink with. Yusuf had the bowl placed in Binyamin's bag while they were unaware, and then had someone herald.
(70) So when he had furnished them forth with their provisions, he put the (golden) bowl into his brother's bag, then a crier cried: "O you (in) the caravan! Surely, you are thieves!"
(O you (in) the caravan! Surely, you are thieves!) They looked at the man who was heralding this statement and asked him,
(71) They, turning towards them, said: "What is it that you have missed?"
("What is it that you have lost'' They said: "We have lost the bowl of the king...''), which he used to measure food grains,
(72) They said: "We have missed the (golden) bowl of the king and for him who produces it is (the reward of) a camel load; I will be bound by it."
(and for him who produces it is a camel load), as a reward, (and I will be bound by it.), as assurance of delivery of the reward.
(By Allah! Indeed you know that we came not to make mischief in the land, and we are no thieves!) `Ever since you knew us, you, due to our good conduct, became certain that,
(we came not to make mischief in the land, and we are no thieves!) They said, `Theft is not in our character, as you came to know.' Yusuf's men said,
(74) They [Yusuf's (Joseph) men] said: "What then shall be the penalty of him, if you are (proved to be) liars."
`(What then shall be the penalty of him), in reference to the thief, if it came out that he is one of you,'
(if you are (proved to be) liars) They asked them, `What should be the thief's punishment if he is one of you'
(75) They [Yusuf's (Joseph) brothers] said: "The penalty should be that he, in whose bag it is found, should be held for the punishment (of the crime). Thus we punish the Zalimun (wrong-doers, etc.)!"
(They said: "His penalty should be that he, in whose bag it is found, should be held for the punishment. Thus we punish the wrongdoers!'') This was the law of Prophet Ibrahim, peace be upon him, that the thief be given as a slave to the victim of theft. This is what Yusuf wanted, and this is why he started with their bags first before his brother's bag, to perfect the plot.
(76) So he [Yusuf (Joseph)] began (the search) in their bags before the bag of his brother. Then he brought it out of his brother's bag. Thus did We plan for Yusuf (Joseph). He could not take his brother by the law of the king (as a slave), except that Allah willed it. (So Allah made the brothers to bind themselves with their way of "punishment, i.e. enslaving of a thief.") We raise to degrees whom We please, but over all those endowed with knowledge is the All-Knowing (Allah).
(Then he brought it out of his brother's bag.) Therefore, Yusuf took Binyamin as a slave according to their judgement and the law which they believed in. So Allah said;
﴿كَذَلِكَ كِدْنَا لِيُوسُفَ﴾
(Thus did We plan for Yusuf.) and this is a good plot that Allah likes and prefers, because it seeks a certain benefit using wisdom and the benefit of all.
Allah said next,
(He could not take his brother by the law of the king,) as a captive, for this was not the law of king of Egypt, according to Ad-Dahhak and several other scholars. Allah only allowed Yusuf to take his brother as a captive after his brothers agreed to this judgement beforehand, and he knew that this was their law.
This is why Allah praised him when He said,
(We raise to degrees whom We will,)
(but over all those endowed with knowledge is the All-Knowing.) Al-Hasan commented, "There is no knowledgeable person, but there is another person with more knowledge until it ends at Allah the Exalted and Most Honored. In addition, `Abdur-Razzaq recorded that Sa`id bin Jubayr said, "We were with Ibn `Abbas when he narrated an amazing Hadith. A man in the audience said, `All praise is to Allah! There is an all-knowing above every person endowed with knowledge.' Ibn `Abbas responded, `Worse it is that which you said! Allah is the All-Knowing and His knowledge is above the knowledge of every knowledgeable person.'
(but over all those endowed with knowledge is the All-Knowing (Allah).) "This person has more knowledge than that person, and Allah is above all knowledgeable persons.'' Similar was narrated from `Ikrimah. Qatadah said, "Over every person endowed with knowledge is a more knowledgeable person until all knowledge ends with Allah. Verily, knowledge started from Allah, and from Him the scholars learn, and to Him all knowledge returns.'' `Abdullah bin Mas`ud read the Ayah this way, (وَفَوْقَ كُلِّ عَالِمٍ عَلِيمٌ) "And above every scholar, is the All-Knower (Allah).''