It is narrated from Sayyiduna Abu Qatadah (may Allah be pleased with him), he says: We were on a journey with the Messenger of Allah (peace and blessings be upon him), and due to traveling at night, fatigue overcame the Prophet (peace and blessings be upon him). So he (peace and blessings be upon him) said: If only we camped here. Then the Prophet (peace and blessings be upon him) turned towards a tree and dismounted there and said: Look, is anyone visible? I said: Here is one rider, here are two riders, until the number reached seven people. Then the Prophet (peace and blessings be upon him) said: Guard our prayer for us. So we slept, and the heat of the sun woke us up, and we became afraid. Then the Messenger of Allah (peace and blessings be upon him) mounted and rode for a short while, and we also rode with him. Then the Prophet (peace and blessings be upon him) dismounted and said: Do you have any water? I said: Yes, I have a vessel with some water in it. The Prophet (peace and blessings be upon him) said: Bring it. Then he said: Touch it, touch it. The people performed ablution from it and one sip remained. The Prophet (peace and blessings be upon him) said: Abu Qatadah! Guard this water, soon there will be great news about it. Then Sayyiduna Bilal (may Allah be pleased with him) gave the call to prayer, performed the two Sunnah units before Fajr, then the Fajr prayer was performed, and then the Prophet (peace and blessings be upon him) mounted again and we also mounted. Some of us began to say to others: We have fallen short in our prayer. But the Messenger of Allah (peace and blessings be upon him) said: What are you saying? If it is a worldly matter, then deal with it yourselves, and if it is a matter of religion, then bring it to me. We said: O Messenger of Allah! We have fallen short in our prayer. The Prophet (peace and blessings be upon him) said: There is no shortcoming due to sleep; shortcoming only occurs when awake. So if this happens, then perform this prayer, and on the next day, perform it at its proper time.