(It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that) when the Prophet (peace and blessings be upon him) entered Makkah, he said: "The people claim that you have been ruined by weakness and hunger, so when you enter and touch the Stone (istilam), perform raml for three rounds." So they did so, and the people of Makkah said: We see these people only as strong, yet you had thought that they had been ruined by weakness.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10583