Jami` at-Tirmidhi 585
جامع الترمذي#585SahihJabir bin Samurah narrated:"When the Prophet prayed Fajr he would remain seated where he had prayed until the sun had risen
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
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih Muslim
In-book reference: 6:42