Compiled by Imam Yahya ibn Sharaf al-Nawawi
وعن أبي هريرة رضي الله عنه قال: سمعت رسول الله صلى الله عليه وسلم يقول: "أرأيتم لو أن نهرًا بباب أحدكم يغتسل منه كل يوم خمس مرات، هل يبقى من درنه شيء؟" قالوا: لا يبقى من درنه شيء، قال: "فذلك مثل الصلوات الخمس، يمحو الله بهن الخطايا".((متفق عليه)).
I heard the Messenger of Allah (ﷺ) saying, "Say, if there were a river at the door of one of you in which he takes a bath five times a day, would any soiling remain on him?" They replied, "No soiling would left on him." He (ﷺ) said, " That is the five (obligatory) Salat (prayers). Allah obliterates all sins as a result of performing them."[Al-Bukhari and Muslim].