Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) and his companions came to Makkah, and the fever of Yathrib had weakened them. The polytheists said: A people are coming to you whom the fever of Yathrib has weakened. So they sat waiting for them on the side of the Hijr (Hatim), and the Messenger of Allah (peace and blessings be upon him) commanded them: "Run the three rounds and walk between the two Corners." Ibn Abbas (may Allah be pleased with him) said: Nothing prevented him (peace and blessings be upon him) from commanding them to run all the rounds except mercy towards them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9273