Sunan an-Nasa'i, Volume 3, Book 24, Hadith 2717 (DarusSalam) ⓘ
It was narrated that 'Aishah said: "The Messenger of Allah entered Ihram for Hajj (only)."
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ أَبِي الأَسْوَدِ، مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، عَنْ عَائِشَةَ، قَالَتْ أَهَلَّ رَسُولُ اللَّهِ صلى الله عليه وسلم بِالْحَجِّ .
also referenced under: Hadith 2716 (Reference) & Book 24, Hadith 0 (In-Book)