من لا يحضره الفقيه, volume 1, page 535

Hadith.1503 - Imam Jafar ibn Muhammad Al-Sadiq (as) was asked about why The Prophet (sw) would turn his cloak around when he prayed for rain (Istisqa'). Imam (as) said: "It was a sign between him and his companions, indicating that drought had turned into abundance."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1504 - A group of people from Kufa came to Commander of the Faithful Imam Ali ibn Abi Talib (as) and said: "O’ Commander of the Faithful Imam Ali ibn Abi Talib (as), pray for us for rain." Commander of the Faithful Imam Ali ibn Abi Talib (as) called for Imam Hasan (as) and Imam Hussain (as) and said: "O’ Hassan (as), Pray." Imam Hassan (as) supplicated, saying: "O’ Allah (swt), stir up the clouds for us, open the doors (of mercy), with abundant water, pouring down and gushing forth. O’ Giver, grant us a deluge that covers and flows abundantly. Open its locks, ease its release, and hasten its bringing forth to water the valleys and uplands, O’ Giver! Let it be rain that pours copiously, that saturates and refreshes, that is beneficial and sufficient, arriving quickly and blessedly. Let it reach everywhere —our plains and mountains, our deserts and towns —so that it lowers our prices, blesses our crops and cities, and shows us a plentiful provision with scarcity removed. Ameen, O’ Lord (azj) of the Worlds." Then He (as) said to Hussain (as), "Pray." Imam Hussain (as) supplicated, saying: "O’ Allah (swt), Giver of goodness from its sources, Sender of mercies from their origins, and Distributor of blessings upon their people, You are the One from whom we seek rain and the One to whom we turn in need. We are sinners and people of transgressions, while You are the One who forgives and is oft-pardoning. There is no god but You. O’ Allah (swt), send upon us rain in abundance, providing plentiful and refreshing showers, granting life-giving rain, full and pouring down in abundance, with a swift, nourishing flood, a complete outpouring, wide-spreading and far-reaching, soaking all lands. Let it be a mercy from You upon us, O’ Lord (azj) of the Worlds." Before Hussain (as) completed his supplication, Allah (swt) sent down rain in abundance. Salman al-Farsi was asked about this and was told: "O’ Abu Abdullah, is this something they (Imam Hassan (as) & Imam Hussain (as)) were taught?" He replied: "Woe to you! Did you not hear the words of Messenger of Allah (sw), who said: 'Wisdom flows on the tongues of my Ahlul Bayt.'"

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.