The Prayer for Seeking Rain (Salat Al-Istisqa)
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 80
وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «جَاءَ أَصْحَابُ فِرْعَوْنَ إِلَى فِرْعَوْنَ فَقَالُوا لَهُ غَارَ مَاءُ اَلنِّيلِ وَ فِيهِ هَلاَكُنَا فَقَالَ اِنْصَرِفُوا اَلْيَوْمَ فَلَمَّا كَانَ مِنَ اَللَّيْلِ تَوَسَّطَ اَلنِّيلَ وَ رَفَعَ يَدَيْهِ إِلَى اَلسَّمَاءِ وَقَالَ اَللَّهُمَّ إِنَّكَ تَعْلَمُ أَنِّي أَعْلَمُ أَنَّهُ لاَ يَقْدِرُ عَلَى أَنْ يَجِيءَ بِالْمَاءِ إِلاَّ أَنْتَ فَجِئْنَا بِهِ فَأَصْبَحَ اَلنِّيلُ يَتَدَفَّقُ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "The people of Pharaoh came to him and said, 'The water of the Nile has dried up, and this will lead to our destruction.' Pharaoh replied: 'Leave it for today.' When night fell, he went to the middle of the Nile, raised his hands to the sky, and said: 'O’ Allah سبحانه وتعالى, You know that I know that none has the power to bring the water except You. So, bring it to us.' By morning, the Nile was flowing abundantly."
- Ṣaḥīḥ al-Faqīh