Al-Lu'lu Wal-Marjan 518 — The Book of Salât Al-Istisqâ [i.e. to offer a two Rak'a prayer and then to invoke Allâh for rain at times of draught]

'Atâ' Narrated from:

‘Aîsha رضى الله عنها said, “Whenever the Prophet ﷺ saw a cloud in the sky, he would walk to and fro in agitation, go out and come in, and the colour of his face would change, and if it rained, he would feel relaxed.” So ‘Aîsha knew that state of his.The Prophet ﷺ said, “I don’t know (am afraid), it may be similar to what happened to some people referred to in the Qur’ân in the following Verse:Then, when they saw it as a dense cloud coming towards their valleys, they said: ‘This is a cloud bringing us rain!’ Nay but it is that (torment) which you were asking to be hastened! — a wind wherein is a painful torment.” (V.46:24)( Sahîh Al-Bukhârî, Hadîth No. 428, Vol. 4)