Jami` at-Tirmidhi 605
جامع الترمذي#605SahihQais bin Asim narrated that:he accepted Islam and the Prophet ordered him to perform Ghusl with water and Sidr
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 6:62