Hadith 8:2726
Abu Bakr narrated to us, he said: Waki’ narrated to us, from Fitr, from al-Hakam, who said: "I do not approve of al-iqran (combining Hajj and Umrah), unless he drives the sacrificial animal (hady). And for the mutamatti’ (one performing Tamattu’), a sheep suffices him."
حدثنا أبو بكر قال نا وكيع عن فطر عن الحكم قال ما يعجبني الإقران إلا أن يسوق والمتمتع يجزئه شاة