What Is The Status Of Narrator "Abdul-Rahman Bin Abi Bakrah"?

I am searching for the reliablity of the narrator Abdul-Rahman Bin Abi Bakrah. He can be found in Bukahri here:- https://sunnah.com/bukhari/79/47 He is also found in one of the text of a narration in Imam Muwatta here:- https://sunnah.com/urn/511660 But why did Mullah Ali Qari regarded him as a weak narrator in Mirqat al-Mafatih? Can someone please trace down the following statement from Mullah Ali Qari in his Mirqat al- Mafatih:- **رواه الترمزي و قال غريب و في اسناده عبد الرحمان بن ابي بكرا المليكي نضعف** (Mirqat, Volume 5, Page 466) Thanks.