Beautiful Hadith is about Tayammum

Narrated `Urwa's RA father: Aisha RA said, "I borrowed a necklace from Asma RA and it was lost. So Allah's Messenger (peace be upon him) sent a man to search for it and he found it. Then the time of the prayer became due and there was no water. They prayed (without ablution) and informed Allah's Messenger (peace be upon him) about it, so the verse of Tayammum was revealed." Usaid bin Hudair RA said to `Aisha, "May Allah reward you. By Allah, whenever anything happened which you did not like, Allah brought good for you and for the Muslims in that." (Bukhari - Vol. 1, Book 7, Hadith 332)