Surah Luqman — Ayah 13 (31:13)
وَإِذۡ قَالَ لُقۡمَٰنُ لِٱبۡنِهِۦ وَهُوَ يَعِظُهُۥ يَٰبُنَيَّ لَا تُشۡرِكۡ بِٱللَّهِۖ إِنَّ ٱلشِّرۡكَ لَظُلۡمٌ عَظِيمٞ ١٣
English translation (Saheeh International)
And [mention, O Muḥammad], when Luqmān said to his son while he was instructing him, "O my son, do not associate [anything] with Allāh. Indeed, association [with Him] is great injustice."
Brief commentary
O Messenger! Remember when Luqman said to his son, encouraging him to do good and warning him from evil, “O my son! Do not worship any of the creation along with Allah; indeed the worship of a deity besides Allah is a grave injustice on the self, and is a cause for permanently staying in the hellfire.”