It was narrated that 'Abdur-Rahman As-Sulami said: " 'Umar said: “The Sunnah is to hold the knees”"
Sahih IsnaadSahih IsnaadHasanBook 12 · Hadith 7
سنن النسائي
It was narrated that 'Abdur-Rahman As-Sulami said: " 'Umar said: “The Sunnah is to hold the knees”"