وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَرَأَيْتُمْ لَوْ أَنَّ نَهْرًا بِبَابِ أَحَدِكُمْ يَغْتَسِلُ فِيهِ كُلَّ يَوْمٍ خَمْسًا هَلْ يَبْقَى مِنْ دَرَنِهِ شَيْءٌ؟ قَالُوا: لَا يَبْقَى مِنْ دَرَنِهِ شَيْءٌ. قَالَ: فَذَلِكَ مَثَلُ الصَّلَوَاتِ الْخَمْسِ يَمْحُو اللَّهُ بِهِنَّ الْخَطَايَا»
He also reported God’s Messenger as saying, “Tell me, if there were a river at the door of one of you in which he washed five times daily, would any of his filthiness remain?” When he received the reply that none of it would remain, he said, “That is like the five times of prayer by which God obliterates sins.”
Mishkat al-Masabih 524, Book 5, Prayer, Hadith 2. 1 min read