It wasnarrated that Bara' said:
"When we performed prayer behind theMessenger of Allah (ﷺ) (One of the narrators) Mis'ar said: 'Oneofthe things we liked, or one of the things I liked' 'was tostand tohis right.'" (DE)
English reference (DE): Vol. 1, Book 5, Hadith 1006 (DE)
Arabic reference (DE): Book 5, Hadith 1059 (DE)