Sunan Abi Dawud 1038
سنن أبي داود#1038HasanNarrated Thawban: The Prophet (ﷺ) said: For each forgetfulness there are two prostrations after giving the salutation. No one except Amr (ibn Uthman) mentioned the words "from his father" (in the chain AbdurRahman ibn Jubayr ibn Nufayr from Thawban)
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: 2:649