(4) باب ذِكْرِ أَعْظَمِ الذَّنْبِ وَاخْتِلاَفِ يَحْيَى وَعَبْدِ الرَّحْمَنِ عَلَى سُفْيَانَ فِي حَدِيثِ وَاصِلٍ عَنْ أَبِي وَائِلٍ عَنْ عَبْدِ اللَّهِ فِيهِ
It was narrated that 'Abdullah said:
"I said: 'O Messenger of Allah, which sin is the most grievous?' He said: 'Setting up a rival to Allah while it is He that has created you.' I said: 'Then what?' He said: 'Killing your child for fear that he may eat with you.' I said: 'Then what?' He said: 'Committing adultery with your neighbor's wife.'" (FR)
Reference (FR): Sunan an-Nasa'i 4013 (FR)
In-book reference (FR): Book 37, Hadith 48 (FR)
English translation (FR): Vol. 5, Book 37, Hadith 4018 (FR)