The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 2875
Anas (Allah be pleased with him) reported that 'All (Allah be pleased with him) came from the Yemen, and the Apostle (may peace be upon him) said: With (what intention) have you put on Ihram? He said: I have put on Ibram in accordance with the intention with which Allah's Apostle (may peace be upon him) has put on Ibram, whereupon he (the Holy Prophet) said: Had there not been the sacrificial animals with me, I would have put off Ibram (after performing 'Umra). This hadith is narrated by Salim b. Hayyin with the same chain of transmitters, but with a slight variation of words.