The Statement of Allah the Exalted: "And those who invoke not any other ilāh (God) along with Allah, nor kill such person..." (V.25:68)
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ سُفْيَانَ، قَالَ حَدَّثَنِي مَنْصُورٌ، وَسُلَيْمَانُ، عَنْ أَبِي وَائِلٍ، عَنْ أَبِي مَيْسَرَةَ، عَنْ عَبْدِ اللَّهِ،. قَالَ وَحَدَّثَنِي وَاصِلٌ، عَنْ أَبِي وَائِلٍ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ سَأَلْتُ ـ أَوْ سُئِلَ رَسُولُ اللَّهِ صلى الله عليه وسلم ـ أَىُّ الذَّنْبِ عِنْدَ اللَّهِ أَكْبَرُ قَالَ " أَنْ تَجْعَلَ لِلَّهِ نِدًّا وَهْوَ خَلَقَكَ ". قُلْتُ ثُمَّ أَىٌّ قَالَ " ثُمَّ أَنْ تَقْتُلَ وَلَدَكَ خَشْيَةَ أَنْ يَطْعَمَ مَعَكَ". قُلْتُ ثُمَّ أَىٌّ قَالَ " أَنْ تُزَانِيَ بِحَلِيلَةِ جَارِكَ ". قَالَ وَنَزَلَتْ هَذِهِ الآيَةُ تَصْدِيقًا لِقَوْلِ رَسُولِ اللَّهِ صلى الله عليه وسلم {وَالَّذِينَ لاَ يَدْعُونَ مَعَ اللَّهِ إِلَهًا آخَرَ وَلاَ يَقْتُلُونَ النَّفْسَ الَّتِي حَرَّمَ اللَّهُ إِلاَّ بِالْحَقِّ وَلَا يَزْنُونَ}
Narrated `Abdullah: I or somebody, asked Allah's Messenger (ﷺ) "Which is the biggest sin in the Sight of Allah?" He said, "That you set up a rival (in worship) to Allah though He Alone created you." I asked, "What is next?" He said, "Then, that you kill your son, being afraid that he may share your meals with you." I asked, "What is next?" He said, "That you commit illegal sexual intercourse with the wife of your neighbor." Then the following Verse was revealed to confirm the statement of Allah's Messenger: "Those who invoke not with Allah, any other god, nor kill life as Allah has forbidden except for just cause, nor commit illegal sexual intercourse." (25.68)