Al-Miqdad said, "Ali ibn Abi Talib went off with bits of meal and leaves on his forearms - and I shall never forget the sight of the meal and the leaves on his arms - and went to see Uthman ibn Affan and asked him, 'Are you saying then that people cannot do hajj and umra together?' Uthman replied, 'That is my opinion.' Whereupon AIi got angry and went out saying, 'I am at your service, O Allah, I am at your service for a hajj and an umra together.' "
Malik said, "Our position (here in Madina) is that someone who does hajj and umra together should not remove any of his hair, nor should he come out of ihram in any way until he has sacrificed an animal, if he has one. He should come out of ihram at Mina, on the day of the sacrifice."
Arabic : Book 20, Hadith 746