It was narrated that Al Hajjaj bin Abi Zainab said: X"I heard Abu Uthman narrate that Ibn Mas'ud said: “The Prophet (ﷺ) saw me when I had placed my left hand on my right in prayer. He took hold of my right hand and placed it on my left”"
HasanHasanIsnaad HasanBook 11 · Hadith 13