Jami` at-Tirmidhi 389
جامع الترمذي#389SahihMadan [bin Talhah] said:"I met Abu Ad-Darda, and I asked him what I had asked Thawban, so he said: 'Perform prostrations, for I heard Allah's Messenger saying: 'No worshipper performs a prostration to Allah except that by it Allah will raise him a level, and erase a sin from him for it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih
In-book reference: 2:241