Abu Umamah bin Sahl bin Hunayf narrated that when the Messenger of Allah (peace and blessings be upon him) performed Umrah and was on the way, he (peace and blessings be upon him) said: "If only we were to look at every fat camel and slaughter it and eat it, so that they (the disbelievers) see our strength." At this Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) said: "O Messenger of Allah, rather call for the people's provisions, then supplicate over them, and Allah, the Mighty and Majestic, will put blessing in them." So the Messenger of Allah (peace and blessings be upon him) did just that. Then the Messenger of Allah (peace and blessings be upon him) said: "When you arrive, walk briskly (ramal) in the first three circuits, so that they see your strength."
And on that day the Messenger of Allah (peace and blessings be upon him) said: "Give the people the glad tidings that whoever says, 'There is no true god except Allah,' Paradise becomes obligatory for him."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5534