It is narrated from Sayyidah Aishah (may Allah be pleased with her) that my necklace was lost at a place called al-Bayda', and we were about to enter Madinah. The Messenger of Allah (peace and blessings be upon him) halted. Meanwhile his head was in my lap and he (peace and blessings be upon him) was sleeping. My father came and gave me a hard poke and said: You have held the people back because of a necklace! Then the Messenger of Allah (peace and blessings be upon him) woke up and the time of prayer came. They searched for water but found none, so this verse of tayammum was revealed: "O you who believe, when you rise for prayer" [Surah al-Ma'idah: 6]. Usayd bin Hudayr (may Allah be pleased with him) said: O family of Abu Bakr, Allah has placed blessing among the people because of you; you are nothing but a source of blessing.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1062