كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(3)
The Statement of Allah "...Then do not set up rivals unto Allah (in worship) while you know (that He Alone has the right to be worshipped)..." (V.2:22)
(3)
Sahih al-Bukhari 4477

Narrated `Abdullah:

I asked the Prophet, "What is the greatest sin in the Sight of Allah?" He said, "That you set up a rival unto Allah though He Alone created you." I said, "That is indeed a great sin." Then asked, "What is next?" He said, "To kill your son lest he should share your food with you." I asked, "What is next?" He said, "To commit illegal sexual intercourse with the wife of your neighbor."

حَدَّثَنِي عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ أَبِي وَائِلٍ، عَنْ عَمْرِو بْنِ شُرَحْبِيلَ، عَنْ عَبْدِ اللَّهِ، قَالَ سَأَلْتُ النَّبِيَّ صلى الله عليه وسلم أَىُّ الذَّنْبِ أَعْظَمُ عِنْدَ اللَّهِ قَالَ ‏"‏ أَنْ تَجْعَلَ لِلَّهِ نِدًّا وَهْوَ خَلَقَكَ ‏"‏‏.‏ قُلْتُ إِنَّ ذَلِكَ لَعَظِيمٌ، قُلْتُ ثُمَّ أَىُّ قَالَ ‏"‏ وَأَنْ تَقْتُلَ وَلَدَكَ تَخَافُ أَنْ يَطْعَمَ مَعَكَ ‏"‏‏.‏ قُلْتُ ثُمَّ أَىُّ قَالَ ‏"‏ أَنْ تُزَانِيَ حَلِيلَةَ جَارِكَ ‏"‏‏.‏
Reference : Sahih al-Bukhari 4477
In-book reference : Book 65, Hadith 4
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 4
  (deprecated numbering scheme)