Hadith 787:5
Muhammad ibn Muqatil narrated to us, 'Abbad ibn al-'Awwam informed us, al-Hajjaj narrated to us, from 'Abdullah, the freed slave of Banu Hashim—and he said: He was trustworthy, and he said: Al-Hakam used to take [hadith] from him—from 'Abd al-Rahman ibn Abi Layla, from Usayd ibn Hudayr, from the Prophet, peace and blessings of Allah be upon him: He was asked about the milk of camels, and he said: "Perform ablution from their milk." And he was asked about the milk of sheep, and he said: "Do not perform ablution from their milk."
حدثنا محمد بن مقاتل، أخبرنا عباد بن العوام، حدثنا الحجاج، عن عبد الله، مولى بني هاشم، قال: وكان ثقة، قال: وكان الحكم يأخذ عنه، عن عبد الرحمن بن أبي ليلى، عن أسيد بن حضير، عن النبي صلى الله عليه وسلم: سئل عن ألبان الإبل؟ فقال: " توضئوا من ألبانها "، وسئل عن ألبان الغنم؟ فقال: " لا توضئوا من ألبانها "