Musnad Ahmad 658:231

'Abd al-Razzaq narrated to us, Sufyan informed us, from al-A'mash, from 'Abd Allah ibn 'Abd Allah, from 'Abd al-Rahman ibn Abi Layla, from al-Bara' ibn 'Azib, that the Prophet, peace and blessings of Allah be upon him, was asked: "Shall we pray in the resting places of camels?" He said: "No." He said: "Shall we pray in the enclosures of sheep?" He said: "Yes." He said: "Shall we perform ablution from the meat of camels?" He said: "Yes." He said: "Shall we perform ablution from the meat of sheep?" He said: "No." Abu 'Abd al-Rahman said: "'Abd Allah ibn 'Abd Allah is a Razi, and he was the judge of Rayy, and his grandmother was a freed slave of 'Ali or a slave girl." 'Abd Allah said: My father said: And Adam and Sa'id ibn Masruq narrated it from him, and he was trustworthy.