Sayyiduna Abdullah bin Sarjis (may Allah be pleased with him) says: I came to the Messenger of Allah (peace and blessings be upon him), walked around behind him, and he sensed my intention. So he removed the sheet from his back, and I saw the place of the Seal of Prophethood, which was like a fist, upon which were marks like moles, protruding like raised spots or the tips of nipples. (After seeing this) I returned to face the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah! May Allah forgive you. So he said:“May He forgive you too.”The people said: The Messenger of Allah (peace and blessings be upon him) has prayed for your forgiveness. He said: Yes! And for you as well. Then he recited this verse: «وَاسْتَغْفِرْ‌ لِذَنبِكَ وَلِلْمُؤْمِنِينَ وَالْمُؤْمِنَاتِ» [محمد: ١٩] “O Prophet! Seek forgiveness for yourself and for the believing men and believing women.”