Sunan Abi Dawud 841
سنن أبي داود#841SahihNarrated AbuHurayrah: The Prophet (ﷺ) said: (Does) one of you kneel down in his prayer as a camel kneels down (i.e. put his knees before his hands)
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 ArnautHasan
Zubair Ali ZaiHasan
In-book reference: 2:451