Muwatta Malik 450
موطأ مالك#450Hasanحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ إِذَا اسْتَسْقَى قَالَ " اللَّهُمَّ اسْقِ عِبَادَكَ وَبَهِيمَتَكَ وَانْشُرْ رَحْمَتَكَ وَأَحْىِ بَلَدَكَ الْمَيِّتَ " .
Yahya related to me from Malik from Yahya ibn Said from Amr ibn Shuayb that the Messenger of Allah, may Allah bless him and grant him peace, said, when he asked for rain, "O Allah, give water to Your slaves and Your animals, and spread Your mercy, and give life to Your dead land
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 13:2