It wasnarrated that Qais bin Sa'd said:
"The Prophet (ﷺ) came tousand we gave him some water with which to cool down. He bathed, thenIbrought him a yellow blanket, and I saw the traces of Wars (theyellow dye) on the folds of his stomach." (ID)
English reference (ID): Vol. 4, Book 32, Hadith 3604 (ID)
Arabic reference (ID): Book 32, Hadith 3735 (ID)