I asked `Aisha (whether the Prophet (ﷺ) had performed `Umra in Rajab). She replied, "Allah's Messenger (ﷺ) never performed any `Umra in Rajab."
Sahih al-Bukhari Book 26, Hadith 4
← Previous Hadith Urwa bin Az-Zubair and I entered the Mosque (of the Prophet) and saw `Abdullah bin `Umar sitting near the dwelling place of Aisha and some people were offering the Duha prayer. We asked him about their prayer and he replied that it was a heresy. He (Urwa) then asked him how many times the Prophet (ﷺ) had performed `Umra. He replied, 'Four times; one of them was in the month of Rajab." We disliked to contradict him. Then we heard `Aisha, the Mother of faithful believers cleaning her teeth with Siwak in the dwelling place. 'Urwa said, "O Mother! O Mother of the believers! Don't you hear what Abu `Abdur Rahman is saying?" She said, "What does he say?" 'Urwa said, "He says that Allah's Messenger (ﷺ) performed four `Umra and one of them was in the month of Rajab." `Aisha said, "May Allah be merciful to Abu `Abdur Rahman! The Prophet (ﷺ) did not perform any `Umra except that he was with him, and he never performed any `Umra in Rajab."

Sahih al-Bukhari Book 26, Hadith 3 Next Hadith → I asked Anas how many times the Prophet (ﷺ) had performed `Umra. He replied, "Four times. 1. `Umra of Hudaibiya in Dhi-l-Qa'da when the pagans hindered him; 2. `Umra in the following year in Dhi-l- Qa'da after the peace treaty with them (the pagans); 3. `Umra from Al-Ja'rana where he distributed the war booty." I think he meant the booty (of the battle) of Hunain. I asked, "How many times did he perform Hajj?" He (Anas) replied, "Once. "

Sahih al-Bukhari Book 26, Hadith 5