The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj)
11/80. Chapter:
Regarding 'Umrah
Sunan Abi Dawud
حَدَّثَنَا النُّفَيْلِيُّ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا أَبُو إِسْحَاقَ، عَنْ مُجَاهِدٍ، قَالَ سُئِلَ ابْنُ عُمَرَ كَمِ اعْتَمَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَقَالَ مَرَّتَيْنِ . فَقَالَتْ عَائِشَةُ لَقَدْ عَلِمَ ابْنُ عُمَرَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَدِ اعْتَمَرَ ثَلاَثًا سِوَى الَّتِي قَرَنَهَا بِحَجَّةِ الْوَدَاعِ .
Mujahid said: Ibn 'Umar was asked: How many times did the Messenger of Allah (ﷺ) perform 'Umrah ? He said: Twice. 'Aishah said: Ibn 'Umar knew that the Messenger of Allah (ﷺ) performed three 'Umrahs in addition to the one he combined with the Farewell Pilgrimage.
Reference : Sunan Abi Dawud 1992In-book reference : Book 11, Hadith 272English translation : Book 10, Hadith 1987