عَنْ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((إِنَّ مُوسَى بْنَ عِمْرَانَ كَانَ إِذَا أَرَادَ أَنْ يَدْخُلَ الْمَاءَ لَمْ يُلْقِ ثَوْبَهُ حَتَّى يُوَارِيَ عَوْرَتَهُ بِالْمَاءِ))
Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him and his family) said: Indeed, when Musa bin Imran (peace be upon him) intended to enter the water, he would not remove his clothes until he had covered the private parts with water.