The five Salat (prayers) are expiations (of sins)

Narrated Abu Huraira:

I heard Allah's Messenger (ﷺ) saying, "If there was a river at the door of anyone of you and he took a bath in it five times a day would you notice any dirt on him?" They said, "Not a trace of dirt would be left." The Prophet (ﷺ) added, "That is the example of the five prayers with which Allah blots out (annuls) evil deeds."

Reference : Sahih al-Bukhari 528


حَدَّثَنَا إِبْرَاهِيمُ بْنُ حَمْزَةَ، قَالَ حَدَّثَنِي ابْنُ أَبِي حَازِمٍ، وَالدَّرَاوَرْدِيُّ، عَنْ يَزِيدَ، عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ أَرَأَيْتُمْ لَوْ أَنَّ نَهَرًا بِبَابِ أَحَدِكُمْ، يَغْتَسِلُ فِيهِ كُلَّ يَوْمٍ خَمْسًا، مَا تَقُولُ ذَلِكَ يُبْقِي مِنْ دَرَنِهِ ‏"‏‏.‏ قَالُوا لاَ يُبْقِي مِنْ دَرَنِهِ شَيْئًا‏.‏ قَالَ ‏"‏ فَذَلِكَ مِثْلُ الصَّلَوَاتِ الْخَمْسِ، يَمْحُو اللَّهُ بِهَا الْخَطَايَا ‏"‏‏.‏


The Power of Tasbeeh

Narrated by 'Ali
Fatima complained of what she suffered from the hand mill and from grinding, when she got the news that some slave girls of the booty had been brought to Allah's Apostle. She went to him to ask for a maid-servant, but she could not find him, and told 'Aisha of her need. When the Prophet came, Aisha informed him of that. The Prophet came to our house when we had gone to our beds. (On seeing the Prophet) we were going to get up, but he said, 'Keep at your places,' I felt the coolness of the Prophet's feet on my chest. Then he said, "Shall I tell you a thing which is better than what you asked me for? When you go to your beds, say: 'Allahu Akbar (i.e. Allah is Greater)' for 34 times, and 'Alhamdu Lillah (i.e. all the praises are for Allah)' for 33 times, and Subhan Allah (i.e. Glorified be Allah) for 33 times. This is better for you than what you have requested."

 Bukhari, Volume 4, Book 53, Number 344 

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