The Book of Hajj
24/144. Chapter:
Tawaf Al-Qiran
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَيُّوبَ بْنِ مُوسَى، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَرَنَ الْحَجَّ وَالْعُمْرَةَ فَطَافَ طَوَافًا وَاحِدًا وَقَالَ هَكَذَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَفْعَلُهُ .
It was narrated that Ibn Umar joined Hajj and Umrah (Qiran) and he performd on Tawaf and said: "This is what I saw the Messenger of Allah doing."
Reference : Sunan an-Nasa'i 2932In-book reference : Book 24, Hadith 315English translation : Vol. 3, Book 24, Hadith 2935