Abu Ubayd ibn Umayr reported from his father that Sayyidina ibn Umar used to crowd (stop) at the two corners. So, he said to him, “O Abu Abdur Rahman! you stop at the two corners making a crowd. I have not seen any of the Prophet’s (SAW) companions stop here.” He said, “If I do that then I had heard Allah’s Messenger (SAW) say, ‘The touching of these two is an atonement of sins’. And I had heard him say, ‘If anyone makes circuit of this House seven times and counts them then it is like setting a slave free’. And, I had heard him say, ‘Hardly is a foot put down (during tawaf) and the other raised, but Allah obliterates by it sin from him and ious deed is recorded for him’.”
[Ahmed 5706]