The Messenger of Allah ﷺ said, "The Children of Israil used to bathe naked, each one looking at the other's private parts, but Musa bathed alone. So they said, 'By Allah, nothing keeps Musa from bathing with us except that he has a swelling in his testicles.'"One time he went to bathe and placed his garment on a rock, and the rock ran off with Musa's garment. Musa dashed after it, calling out, 'My garment, stone! My garment, stone!' until the Children of Israil saw Musa's private parts and said, 'By Allah, there is nothing wrong with Musa.' Then the stone stood still, once they had looked at him, and he took his garment and set about striking the stone."Abu Hurairah said, "By Allah, there are six or seven marks on that stone from Musa's striking it."
وبإسناده قال وقال رسول الله ﷺ كانت بنو إسرائيل يغتسلون عراة ينظر بعضهم إلى سوأة بعض وكان موسى عليه السلام يغتسل وحده فقالوا والله ما يمنع موسى أن يغتسل معنا إلا أنه آدر قال فذهب مرة يغتسل فوضع ثوبه على حجر ففر الحجر بثوب موسى قال فجمح موسى يأمره يقول ثوبي حجر ثوبي حجر حتى نظرت بنو إسرائيل إلى سوأة موسى وقالوا والله ما بموسى من بأس فقام الحجر بعد حتى نظر إليه فأخذ ثوبه وطفق بالحجر ضربا فقال أبو هريرة والله إن بالحجر ندبا ستة أو سبعة ضرب موسى بالحجر
This is also sahih due to the soundness of the manuscript, and it appears in the standalone manuscript under number 60. Bukhari related it [64: 1/1st ed: 330-331] through the route of the manuscript, along with the previous hadith 8144. He also related it - with the same meaning - at length and in abridged form through another route, 6: 312-313 and 8: 411 Fath. Muslim related it twice with a single chain of transmission through the route of the manuscript [1: 183 and 7: 99, Sindi ed 1/104-105, and 2: 225 Bulaq ed]. It is one of three hadiths that Muslim repeated in his Sahih in two places. Its meaning will come again through other routes from Abu Hurairah, 8284, 9080, 10689, 10972.As for his saying "adar", it is with a lengthened alif and a fatha on the dal, ending in ra, and it comes from "adrah" with a damma on the hamza and sukun on the dal, meaning a swelling of the testicle. As for his saying "bi-atharihi", it is with a fatha on the hamza and the three-dotted tha, and it is also vocalized with a kasra on the hamza together with sukun on the three-dotted tha, and both forms are recorded in the Yuniniyyah edition.