Sunan Abi Dawud 682
سنن أبي داود#682SahihNarrated Wabisah: The Messenger of Allah (ﷺ) saw a man praying alone behind the row. He ordered him to repeat. Sulayman ibn Harb said: The prayer
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
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:292