Jami` at-Tirmidhi 3406
جامع الترمذي#3406HasanAr-Irbad bin Sariyah (ra) narrated that:The Prophet (ﷺ) would not sleep until he had recited Al-Musabbihat, and he would say: “In them is an Ayah that is better than a thousand Ayah.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirHasan
Al-AlbaniHasan
Bashar Awad MaaroufHasan
Zubair Ali ZaiHasan
In-book reference: 48:37