Chapter on the Manner of Prayer, Explanation of the Fifty-One Rak‘ahs; The Order, Recitation, Tasbih in Bowing and Prostration, Qunut, and What is Obligatory and Recommended Therein

If it is said: You have mentioned narrations that include the permissibility of limiting oneself to a single tasbihah (saying "Subhan Allah") in bowing and prostration, while Al-Husayn ibn Sa‘id and others have narrated what repels you from that: (see following narration)