حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا ابْنُ أَبِي لَيْلَى، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ سَعْدِ بْنِ زُرَارَةَ، عَنْ مُحَمَّدِ بْنِ شُرَحْبِيلَ، عَنْ قَيْسِ بْنِ سَعْدٍ، قَالَ أَتَانَا النَّبِيُّ ـ صلى الله عليه وسلم ـ فَوَضَعْنَا لَهُ مَاءً فَاغْتَسَلَ ثُمَّ أَتَيْنَاهُ بِمِلْحَفَةٍ وَرْسِيَّةٍ فَاشْتَمَلَ بِهَا فَكَأَنِّي أَنْظُرُ إِلَى أَثَرِ الْوَرْسِ عَلَى عُكَنِهِ ‏.‏

It was narrated that Qais bin Sa'd said: "The Prophet came to us and we gave him water to perform a bath." Then we brought him a Warshiyyah cloth, and he wrapped himself in it. It is as if I can see the marks of the Wars on the folds of his stomach." Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 466
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 466