Sahih al-Bukhari 1766

Arabic

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، قَالَ عَمْرٌو عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ لَيْسَ التَّحْصِيبُ بِشَىْءٍ، إِنَّمَا هُوَ مَنْزِلٌ نَزَلَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم‏.‏

English translation

Narrated Ibn `Abbas:Staying at Al-Mahassab is not one of the ceremonies (of Hajj), but Al-Mahassab is a place where Allah's Messenger (ﷺ) camped (during his Hajjat-al-Wida)

Reference: Sahih al-Bukhari 1766, Book of Hajj (Pilgrimage). English translation by Dr. Muhammad Muhsin Khan.