Muwatta Malik (Yahya)

It is narrated from Sulayman bin Yasar that the Messenger of Allah, may Allah bless him and grant him peace, set out in the year of the Farewell Pilgrimage to perform Hajj. Some of his companions entered into the state of ihram for Hajj, some for both Hajj and Umrah, and some for Umrah only. So whoever had entered into ihram for Hajj or for both Hajj and Umrah did not come out of ihram, and whoever had entered into ihram for Umrah only, after performing Umrah, came out of ihram.

Imam Malik, may Allah have mercy on him, said: The companions of the Messenger of Allah, peace and blessings be upon him, assumed ihram for ‘Umrah in the year of the Farewell Hajj, then the Messenger of Allah, peace and blessings be upon him, said: "Whoever has a sacrificial animal with him should also assume ihram for Hajj, then he should not exit ihram until he has completed both Hajj and ‘Umrah."

Imam Malik, may Allah have mercy on him, said: I heard from some people of knowledge, they used to say: Whoever put on the ihram for ‘Umrah and then it seemed good to him to also put on the ihram for Hajj along with the ‘Umrah, this is permissible as long as he has not performed the Tawaf of the Ka‘bah and the Sa‘i between Safa and Marwah. And Sayyiduna ‘Abdullah bin ‘Umar, may Allah be pleased with them both, did the same, when he said that I will be prevented from the Ka‘bah, so I will do as the Messenger of Allah, peace and blessings be upon him, did. Then he turned to his companions and said that the state of Hajj and ‘Umrah is the same, so I make you witnesses that I have also made the intention of Hajj along with ‘Umrah.