Surah Luqman Notes (15-16) | Luqman's advise to his son

Source: Ibn Kathir

 (15) But if they (both) strive with you to make you join in worship with Me others that of which you have no knowledge, then obey them not, but behave with them in the world kindly, and follow the path of him who turns to Me in repentance and in obedience. Then to Me will be your return, and I shall tell you what you used to do.

(But if they strive with you to make you join in worship with Me others that of which you have no knowledge, then obey them not;) means, if they try hard to make you follow them in their religion, then do not accept that from them, but do not let that stop you from behaving with them in the world kindly, i.e. treating them with respect.

(and follow the path of him who turns to Me in repentance and in obedience.) means, the believers.

(Then to Me will be your return, and I shall tell you what you used to do.) At-Tabarani recorded in Al-`Ishrah that Sa`d bin Malik said, "This Ayah,

(But if they strive with you to make you join in worship with Me others that of which you have no knowledge, then obey them not;) was revealed concerning me. I was a man who honored his mother, but when I became Muslim, she said: `O Sa`d! What is this new thing I see you doing Leave this religion of yours, or I will not eat or drink until I die, and people will say: Shame on you, for what you have done to me, and they will say that you have killed your mother.' I said, `Do not do that, O mother, for I will not give up this religion of mine for anything.' She stayed without eating for one day and one night, and she became exhausted; then she stayed for another day and night without eating, and she became utterly exhausted. When I saw that, I said: `O my mother, by Allah, even if you had one hundred souls and they were to depart one by one, I would not give up this religion of mine for anything, so if you want to, eat, and if you want to, do not eat.' So she ate.''

This is useful advice which Allah tells us Luqman gave, so that people may follow it and take it as a good example.

(16) "O my son! If it be (anything) equal to the weight of a grain of mustard seed, and though it be in a rock, or in the heavens or in the earth, Allah will bring it forth. Verily, Allah is Subtle (in bringing out that grain), Well-Aware (of its place).

He said:

(O my son! If it be (anything) equal to the weight of a grain of mustard seed, ) means, if a wrong action or a sin be equal to the size of a grain of mustard seed.

(Allah will bring it forth.) means, He will bring it forth on the Day of Resurrection, when it is placed in the Scales of justice and everyone is rewarded or punished for his actions -- if they are good, he will be rewarded and if they are bad he will be punished. 

This is like the Ayat:

(And We shall set up Balances of justice on the Day of Resurrection, then none will be dealt with unjustly in anything) (21:47).

(So, whosoever does good equal to the weight of a speck of dust shall see it. And whosoever does evil equal to the weight of a speck of dust shall see it.) (99:7-8) 

Even if this tiny thing were to be hidden inside a solid rock or anywhere in the heavens and the earth, Allah will bring it forth, because nothing is hidden from Him, not even the weight of a speck of dust in the heavens or on the earth. 

Allah says:

(Verily, Allah is Subtle, Well-Aware.) meaning, His knowledge is subtle, for nothing is hidden from Him, no matter how small, subtle and minute.

(Well-Aware.) even of the footsteps of an ant in the darkest night.