(2) باب الإِمْسَاكِ بِالرُّكَبِ فِي الرُّكُوعِ
It was narrated that 'Abdur-Rahman As-Sulami said:
" 'Umar said: 'The Sunnah is to hold the knees.'" (JA)
Reference (JA): Sunan an-Nasa'i 1035 (JA)
In-book reference (JA): Book 12, Hadith 7 (JA)
English translation (JA): Vol. 2, Book 12, Hadith 1036 (JA)