Mukhtasar Muslim

It is narrated from Sayyiduna Buraidah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) performed several prayers with one ablution on the day of the conquest of Makkah and wiped over his socks. Sayyiduna Umar Farooq (may Allah be pleased with him) said, "O Messenger of Allah! Today you have done something which you have never done before." The Prophet (peace and blessings of Allah be upon him) replied, "I have done this intentionally."