Jami` at-Tirmidhi 584
جامع الترمذي#584SahihAnas bin Malik narrated:"When we prayed behind the Prophet in the midday heat, we would prostrate on our garments as a protection against the heat
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 - Agreed Upon
In-book reference: 6:41