Sunan Abi Dawud 1168
سنن أبي داود#1168SahihNarrated Umayr, the client of AbulLahm: Umayr saw the Prophet (ﷺ) praying for rain at Ahjar az-Zayt near az-Zawra', standing, making supplication, praying for rain and raising his hands in front of his face, but not lifting them above his head
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih
In-book reference: 3:8