Musannaf Ibn Abi Shaybah

Hazrat Ibn Umar (may Allah be pleased with them both) narrates that I heard the Holy Prophet (peace and blessings be upon him) say: Whoever performs the circumambulation (Tawaf) of the House of Allah, for every step he takes and places, a good deed is written for him, a sin is erased, and his rank in Paradise is elevated. And he (the Prophet) also said: I heard him say that whoever completes seven circuits (of Tawaf), he receives the reward equal to that of freeing a slave.