Abu Hurayrah or Abu Sa‘īd al-Khudri (the narrator was unsure) (may Allah be pleased with him) reported: During the battle of Tabūk, the people suffered famine, so they said: "O Messenger of Allah, grant us permission to slaughter our camels to eat and use their fat." The Messenger of Allah (may Allah's peace and blessings be upon him) said: "You may do that." Then ‘Umar (may Allah be pleased with him) came and said: "O Messenger of Allah, if you do that, there will be a shortage in riding animals. Instead of that, let them bring the leftovers of their provisions, then supplicate Allah for them to bless it perhaps Allah will put some blessing therein." The Messenger of Allah (may Allah's peace and blessings be upon him) agreed to that and asked for a leather mat and spread it out. Then he asked them to bring their leftovers. One man brought a handful of corn; another brought a handful of dates; and another brought a piece of bread until an insignificant amount was collected on the leather mat. So the Messenger of Allah (may Allah's peace and blessings be upon him) invoked the blessing of Allah then said: "Take and fill your containers." They filled their containers until no container in the army was left unfilled. They ate their fill and there was some food left over. So the Messenger of Allah (may Allah's peace and blessings be upon him) said: "I bear witness that there is no god but Allah and that I am the Messenger of Allah. No slave will meet Allah believing in these two (testimonies of faith) without having any doubt and be prevented from Paradise."