Sahih Muslim – Hadith No : 6230

Jabir b. Samura reported that there had appeared some whiteness on the front part of the head and beard of Allah’s Messenger (may peace be upon him). When he applied oil, it did not become visible, but when he did not (apply) oil, it became apparent. And he had a thick beard. A person said: His face was as (bright) as the sword. Thereupon he (Jabir) said: No, it was round and like the sun and the moon. And I saw the seal near his shoulder of the size of a pigeon’s egg and its color was the same as that of his body.

Hadith In Arabic Text :

وحدثنا أبو بكر بن أبي شيبة، حدثنا عبيد الله، عن إسرائيل، عن سماك، أنه سمع جابر بن سمرة، يقول كان رسول الله صلى الله عليه وسلم قد شمط مقدم رأسه ولحيته وكان إذا ادهن لم يتبين وإذا شعث رأسه تبين وكان كثير شعر اللحية فقال رجل وجهه مثل السيف قال لا بل كان مثل الشمس والقمر وكان مستديرا ورأيت الخاتم عند كتفه مثل بيضة الحمامة يشبه جسده ‏.‏

Chapter : The Book Pertaining to the Excellent Qualities of the Holy Prophet (may Peace be upon them) and His – كتاب الفضائل