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كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(1)
"Cruel, and moreover base-born (of illegitimate birth) ." (V.68:13)
(1)
Sahih al-Bukhari 4917

Narrated Ibn `Abbas:

(regarding the Verse):-- 'Cruel after all that, base-born (of illegitimate birth).' (68.13) It was revealed in connection with a man from Quaraish who had a notable sign (Zanamah) similar to the notable sign which usually-hung on the neck of a sheep (to recognize it).

حَدَّثَنَا مَحْمُودٌ، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ إِسْرَائِيلَ، عَنْ أَبِي حَصِينٍ، عَنْ مُجَاهِدٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ ‏{‏عُتُلٍّ بَعْدَ ذَلِكَ زَنِيمٍ‏}‏ قَالَ رَجُلٌ مِنْ قُرَيْشٍ لَهُ زَنَمَةٌ مِثْلُ زَنَمَةِ الشَّاةِ‏.‏
Reference : Sahih al-Bukhari 4917
In-book reference : Book 65, Hadith 437
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 439
  (deprecated numbering scheme)