Sahih al-Bukhari 1779
Narrated Qatada:
I asked Anas (about the Prophet's `Umra) and he replied, "The Prophet (ﷺ) performed `Umra when the 
pagans made him return, and Umra of al-Hudaibiya (the next year), and another `Umra in Dhi-l-Qa'da, 
and another `Umra in combination with his Hajj."
حَدَّثَنَا أَبُو الْوَلِيدِ، هِشَامُ بْنُ عَبْدِ الْمَلِكِ حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، قَالَ سَأَلْتُ أَنَسًا ـ رضى الله عنه ـ فَقَالَ اعْتَمَرَ النَّبِيُّ صلى الله عليه وسلم حَيْثُ رَدُّوهُ، وَمِنَ الْقَابِلِ عُمْرَةَ الْحُدَيْبِيَةِ، وَعُمْرَةً فِي ذِي الْقَعْدَةِ وَعُمْرَةً مَعَ حَجَّتِهِ‏.‏