Jami` at-Tirmidhi 420
جامع الترمذي#420Da'ifAbu Hurairah narrated that:Allah's Messenger (S) said: "When one of you prays the two Rak'ah of Fajr then let him lay down on his right (side)
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 ZaiDaif
In-book reference: 2:273