Muwatta Malik 776

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ سُلَيْمَانَ بْنِ يَسَارٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم احْتَجَمَ وَهُوَ مُحْرِمٌ فَوْقَ رَأْسِهِ وَهُوَ يَوْمَئِذٍ بِلَحْيَىْ جَمَلٍ مَكَانٌ بِطَرِيقِ مَكَّةَ ‏.‏

Yahya related to me from Malik, from Yahya ibn Sa'id, from Sulayman ibn Yasar, that the Messenger of Allah, may Allah bless him and grant him peace, was once cupped on the top of his head while he was in ihram, at Lahyay Jamal, which is a place on the road to Makka

Reference

Muwatta Malik 776

In-book

Book 20, Hadith 72