When the two circumcised parts met, the Prophet ﷺ would perform the ritual bath.
حدثنا أبو كامل قال حدثنا حماد عن ثابت البناني عن عبد الله بن رباح عن عبد العزيز بن النعمان
كان النبي ﷺ إذا التقى الختانان اغتسل
No references are available.
Its isnad is sahih. Abdullah bin Rabah Ansari is trustworthy, his hadith appears in Muslim and the four Sunan. As for Abdul-Aziz bin Numan, Ibn Hibban deemed him trustworthy, but Bukhari raised doubts about his hearing from Ayesha. However, Abdullah bin Rabah himself lived in Ayesha's time. The hadith was mentioned earlier at 24918.