The Sufficient (Vol 3) · Hadith 1818 (#Ḥadīth #4)

4ـ وَفِي رِوَايَةِ ابْنِ الْمُغِيرَةِ قَالَ يُكَبِّرُ فِي صَلاَةِ الاسْتِسْقَاءِ كَمَا يُكَبِّرُ فِي الْعِيدَيْنِ فِي الأولَى سَبْعاً وَفِي الثَّانِيَةِ خَمْساً وَيُصَلِّي قَبْلَ الْخُطْبَةِ وَيَجْهَرُ بِالْقِرَاءَةِ وَيَسْتَسْقِي وَهُوَ قَاعِدٌ.

4. It is in the narration of ibn al-Mughirah: that Takbir (Allah is great beyond description) in Salah (prayer) for rain is said in the same way as on the day of ‘Id, seven times in the first Rak‘at and five times in the second Rak‘at. He (the Imam) performs Salah (prayer) before the sermon; recites aloud and pleads for rain when he is sitting . (Ahadith 3-4 and the following chapter are best by fatwa.)

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).