and, indeed, we granted this wisdom unto Luqman: "Be grateful unto God - for he who is grateful [unto Him] is but grateful for the good of his own self; whereas he who chooses to be ungrateful [ought to know that,] verily, God is self-sufficient, ever to be praised!" 12 And when Lokman said to his son, in warning: 'My son, associate none with Allah, to associate others with Allah is a tremendous wrong' 13 And We have enjoined on man (to be good) to his parents: in travail upon travail did his mother bear him, and in years twain was his weaning: (hear the command), "Show gratitude to Me and to thy parents: to Me is (thy final) Goal. 14 If they try to force you to consider things equal to Me, which you cannot justify, equal to Me, do not obey them. Maintain lawful relations with them in this world and follow the path of those who turn in repentance to Me. To Me you will all return and I shall tell you all that you have done. 15 O my son! though it be but the weight of a grain of mustard-seed, and though it be in a rock or in the heavens, or in the earth, Allah shall bring it forth. Verily Allah is subtile, Aware. 16 O my son, fulfil your moral obligations, bid what is known to be right and forbid what is wrong, and bear with patience what befalls you. These are indeed acts of courage and resolve. 17 Do not hold men in contempt, and do not walk with hauteur on the earth. Verily God does not like the proud and boastful. 18 Be modest in thy walk, and lower thy voice; the most hideous of voices is the ass's.' 19