(2) باب الإِمْسَاكِ بِالرُّكَبِ فِي الرُّكُوعِ
It was narrated that 'Umar said:
"It is established for you to hold the knees, so hold the knees." (TH)
Reference (TH): Sunan an-Nasa'i 1034 (TH)
In-book reference (TH): Book 12, Hadith 6 (TH)
English translation (TH): Vol. 2, Book 12, Hadith 1035 (TH)