حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ أَبِي يَزِيدَ، عَنْ سِبَاعِ بْنِ ثَابِتٍ، عَنْ أُمِّ كُرْزٍ، قَالَتْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ عَنِ الْغُلاَمِ شَاتَانِ مِثْلاَنِ وَعَنِ الْجَارِيَةِ شَاةٌ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ هَذَا هُوَ الْحَدِيثُ وَحَدِيثُ سُفْيَانَ وَهَمٌ ‏.‏

Narrated Umm Kurz: The Messenger of Allah (PBUH) said: Two sheep which resemble each other are to be sacrificed for a boy and one for a girl. Abu Dawud said: This is a sound tradition, and the tradition narrated by Sufyan is misunderstanding. Translation Not Available

Book Ref: Sunan Abi Dawud Book 16 Hadith 2836
Web Ref:  Sunan Abi Dawud Book 15 Hadith 2830