Not graded
Al-Adab al-Mufrad 1252
حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللهِ الأُوَيْسِيُّ قَالَ: حَدَّثَنِي سُلَيْمَانُ بْنُ بِلاَلٍ، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ قَالَ: وَكَانَ الرَّجُلُ إِذَا أَسْلَمَ أُمِرَ بِالِاخْتِتَانِ وَإِنْ كَانَ كَبِيرًا.
Ibn Shihab said, "When a man became Muslim, he was ordered to have himself circumcised, even if he was old."
Cited in Al-Adab al-Mufrad (No. 1252).