I asked Masruq, `Ata' and Mujahid (about the `Umra of Allah's Messenger (ﷺ)). They said, "Allah's Messenger (ﷺ) had performed `Umra in Dhi-l-Qa'da before he performed Hajj." I heard Al-Bara' bin `Azib saying, "Allah's Messenger (ﷺ) had performed `Umra in Dhi-l-Qa'da twice before he performed Hajj."
Sahih al-Bukhari Book 26, Hadith 8
← Previous Hadith The Prophet (ﷺ) performed four `Umra (three) in Dhi-l-Qa'da except the (one) `Umra which he performed with his Hajj: His `Umra from Al-hudaibiya, and the one of the following year, and the one from Al- Jr'rana where he distributed the booty (of the battle) of Hunain, and another `Umra with his Hajj.

Sahih al-Bukhari Book 26, Hadith 7 Next Hadith → I heard Ibn `Abbas saying, "Allah's Messenger (ﷺ) asked an Ansari woman (Ibn `Abbas named her but `Ata' forgot her name), 'What prevented you from performing Hajj with us?' She replied, 'We have a camel and the father of so-and-so and his son (i.e. her husband and her son) rode it and left one camel for us to use for irrigation.' He said (to her), 'Perform `Umra when Ramadan comes, for `Umra in Ramadan is equal to Hajj (in reward),' or said something similar."

Sahih al-Bukhari Book 26, Hadith 9