Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated: The Messenger of Allah (peace and blessings be upon him) performed raml (walking briskly) while circumambulating the House of Allah and while performing sa’i between Safa and Marwah, so that the polytheists could see him, because the polytheists had said: Muhammad (peace and blessings be upon him) and his companions have become weak (and the climate of Madinah has made them weak). So the Prophet (peace and blessings be upon him) performed raml, in order to show them his strength.
Hadith Referenceمسند اسحاق بن راهويه / كتاب المناسك / 335
Hadith Takhrij«بخاري ، كتاب الحج ، باب ماجاء فى السعي بين الصفاء والمروة ، رقم : 1649 . مسلم ، كتاب الحج ، باب استحباب الرمل فى الطواف الخ ، رقم : 1266 . سنن ترمذي ، رقم : 863 . سنن نسائي ، رقم : 2979 . مسند احمد : 221/1»