Sunan Ibn Majah, Book 1, Hadith 503 (In-Book) ⓘ

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."

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 ‏.‏