´Narrated As-Sa'ib bin Yazid:` "My maternal aunt took me to the Prophet (ﷺ), and said: 'O Messenger of Allah! Indeed my nephew is in pain.' So he wiped over my head and supplicated for blessings for me. And he performed Wudu and I drank from the water of his Wudu. Then I stood behind his back, and I looked at the seal between his two shoulder blades, and it resembled the egg of a partridge.
Hadith Referenceسنن ترمذي / كتاب المناقب عن رسول الله صلى الله عليه وسلم / 3643
´Narrated Jabir bin Samurah:` "The seal of the Messenger of Allah (ﷺ)" - meaning the one which was between his two shoulder blades - "was fleshy and red, resembling the egg of a pigeon."
Hadith Referenceسنن ترمذي / كتاب المناقب عن رسول الله صلى الله عليه وسلم / 3644
Hadith Gradingالألبانی:صحيح مختصر الشمائل (15) | زبیر علی زئی:(3644) سنده ضعيف / شمائل الترمذي : 17, فيه أيوب بن جابر ضعيف (د 247) والحديث صحيح دون قوله: ”غدة حمراء“ انظر صحيح مسلم (2344)