As-Sa’ib ibn Yazid said:

‘My maternal aunt took me to the Prophet (ﷺ), and she said; “O Messenger of Allah, my sister's son is in pain!” He therefore stroked my head (ﷺ) and supplicated blessing for my sake. He performed the minor ritual ablution. I drank from his ablution water and stood behind his back, whereupon I observed the Seal between his shoulders, and lo and behold, it was like the button of the bridal canopy!”’

حَدَّثَنَا أَبُو رَجَاءٍ قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ‏:‏ حَدَّثَنَا حَاتِمُ بْنُ إِسْمَاعِيلَ، عَنِ الْجَعْدِ بْنِ عَبْدِ الرَّحْمَنِ، قَالَ‏:‏ سَمِعْتُ السَّائِبَ بْنَ يَزِيدَ، يَقُولُ‏:‏ ذَهَبَتْ بِي خَالَتِي إِلَى النَّبِيِّ صلى الله عليه وسلم، فَقَالَتْ‏:‏ يَا رَسُولَ اللهِ، إِنَّ ابْنَ أُخْتِي وَجِعٌ فَمَسَحَ رَأْسِي وَدَعَا لِي بِالْبَرَكَةِ، وَتَوَضَّأَ، فَشَرِبْتُ مِنْ وَضُوئِهِ، وَقُمْتُ خَلْفَ ظَهْرِهِ، فَنَظَرْتُ إِلَى الْخَاتَمِ بَيْنَ كَتِفَيْهِ، فَإِذَا هُوَ مِثْلُ زِرِّ الْحَجَلَةِ‏.‏