Anas said that God’s messenger performed the 'umra four times, each of them Dhul Qa'da except the one which was combined with his hajja, one from al-Hudaibiya in Dhul Qa'da, one in the following year in Dhul Qa'da, one from al-Ji'rana where he divided the spoils of Hunain (The battle in which the Prophet defeated Hawazin after the conquest of Mecca in 8 A.H) in Dhul Qa'da, and one along with his hajja.
Ibn ‘Abbas reported God’s messenger as saying, “God has prescribed the pilgrimage for you people." Al-Aqra' b. Habis then got up and asked whether it was to be performed annually, to which God’s messenger replied that if he were to tell them that it was, it would become obligatory, and if it did they would not keep it nor be able to do so, adding, “The pilgrimage should be performed once, and if anyone does it oftener he performs supererogatory act."
Jabir reported God’s messenger as saying, “The place for the people of Medina to put on the ihram is Dhul Hulaifa, and on the other road al-Juha. For the people of al-Iraq it is Dhat ‘Irq, for the people of Najd it is Qarn, and for the people of the Yemen it is Yalamlam."