Sunan Abi Dawud 1300
سنن أبي داود#1300HasanNarrated Ka'b ibn Ujrah: The Prophet (ﷺ) came to the mosque of Banu AbdulAshhal. He prayed the sunset prayer there. When they finished the prayer, he saw them praying the supererogatory prayer after it. He said: This is the prayer to be offered in the houses
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan
Muhammad Muhyi Al-Din Abdul HamidHasan
Shuaib Al ArnautHasan Lighairihi
Zubair Ali ZaiIsnaad Hasan
In-book reference: 5:51