It wasnarrated from Qabisah bin Hulb that his father said:
"TheProphet(ﷺ) used to lead us in prayer, and he would take hold of hislefthand with his right." (RU)
English reference (RU): Vol. 1, Book 5, Hadith 809 (RU)
Arabic reference (RU): Book 5, Hadith 858 (RU)