Hadith 14:239
Abu Bakr narrated to us, he said: Muhammad ibn Abi ‘Adi narrated to us, from Ibn ‘Awn, he said: Muhammad [ibn Sirin] used to be asked about drinking the urine of camels, and he would say: "I do not know what this is."
حدثنا أبو بكر قال حدثنا محمد بن أبي عدي عن بن عون قال كان محمد يسأل عن شرب أبوال الإبل فيقول لا أدري ما هذا