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.'"  

رَآنِي النَّبِيُّ ﷺ وَقَدْ وَضَعْتُ شِمَالِي عَلَى يَمِينِي فِي الصَّلاَةِ فَأَخَذَ بِيَمِينِي فَوَضَعَهَا عَلَى شِمَالِي