Hadith 6:44
Abu At-Tufail (RAA) narrated, ‘l saw Allah’s Messenger (ﷺ) making Tawaf round the Ka'bah and he was touching the corner (of the Black Stone) with a stick that he had with him and then kissing the stick.’ Related by Muslim.
وَعَنْ أَبِي اَلطُّفَيْلِ - رضى الله عنه - قَالَ: { رَأَيْتُ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -يَطُوفُ بِالْبَيْتِ وَيَسْتَلِمُ اَلرُّكْنَ بِمِحْجَنٍ مَعَهُ, وَيُقْبِّلُ اَلْمِحْجَنَ } رَوَاهُ مُسْلِمٌ
Original Reference: Bulugh al-Maram 751