Sahih al-Bukhari 6673

Abu Abdullah said: Muhammad ibn Bashshar wrote to me: Muadh ibn Muadh narrated to us; Ibn Awn narrated to us, from al-Sha'bi, who said: Al-Bara ibn Azib said that they had a guest staying with them. He told his family to slaughter an animal before he returned so their guest could eat. They slaughtered before the prayer. They mentioned this to the Prophet, peace and blessings be upon him, and he ordered him to slaughter again. The man said, ‘Messenger of Allah, I have a young she-goat that has begun producing milk, and it is better than two meat sheep.’ Ibn Awn would stop here in the report from al-Sha'bi and relate a similar report from Muhammad ibn Sirin, then stop here and say he did not know whether the concession had been extended to anyone else. Ayyub related it from Ibn Sirin, from Anas, from the Prophet, peace and blessings be upon him.