13وَإِذ قالَ لُقمانُ لِابنِهِ وَهُوَ يَعِظُهُ يا بُنَيَّ لا تُشرِك بِاللَّهِ ۖ إِنَّ الشِّركَ لَظُلمٌ عَظيمٌ(Irfan-ul-Quran)And (recall) when Luqman said to his son, and he was advising him: ‘O my son, do not set up partners with Allah. Verily associating partners with Allah is a very grave injustice.’