حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنِ ابْنِ أَبِي لَيْلَى، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ مُحَمَّدِ بْنِ شُرَحْبِيلَ، عَنْ قَيْسِ بْنِ سَعْدٍ، قَالَ أَتَانَا النَّبِيُّ ـ صلى الله عليه وسلم ـ فَوَضَعْنَا لَهُ مَاءً يَتَبَرَّدُ بِهِ فَاغْتَسَلَ ثُمَّ أَتَيْتُهُ بِمِلْحَفَةٍ صَفْرَاءَ فَرَأَيْتُ أَثَرَ الْوَرْسِ عَلَى عُكَنِهِ ‏.‏

It wasnarrated that Qais bin Sa’d said: “The Prophet (PBUH) 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.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 32 Hadith 3604
Web Ref:  Sunan Ibn Majah Vol 4 Book 32 Hadith 3604