the Prophet said: "Tawaf around the House is similar to Salat except that you talk during it. So whoever talks in it, then let him not say but good."
Jami` at-Tirmidhi Book 9, Hadith 154
← Previous Hadith "Ibn Umar was clinging on the two corners (in a manner that I had not seen any of the Companions of the Prophet doing) so I said: 'O Abu Abdur-Rahman! You are clinging on the two corners in a manner that I have not seen any of the Companions of the Prophet clining.' So he said: 'I do it because I heard the Messenger of Allah saying: "Touching them atones for sins." And I heard him saying: "Whoever performs Tawaf around this House seven times and he keeps track of it, then it is as if he freed a slave." And I heard him saying: "One foot is not put down, nor another raised except that Allah removes a sin from him and records a good merit for him."

Jami` at-Tirmidhi Book 9, Hadith 153 Next Hadith → The Messenger of Allah said about the (Black) Stone: "By Allah! Allah will raise it on the Day of Resurrection with two eyes by which it sees and a tongue that it speaks with, testifying to whoever touched it in truth."

Jami` at-Tirmidhi Book 9, Hadith 155