Sayyiduna Jabir bin Abdullah (RA) narrates that the Messenger of Allah (peace and blessings be upon him) said: The example of the five prayers is like that of a river which is flowing, deep enough to drown, and is at the door of one of you, and he bathes in it five times a day.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), he says: I heard that the Messenger of Allah (peace and blessings be upon him) said: Whoever associates a partner with Allah, Allah will cast him into Hell. Then Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: The second statement I am saying myself, I did not hear this from the Prophet (peace and blessings be upon him): Whoever dies in such a state that he does not associate any partner with Allah, He will admit him into Paradise, and indeed these prayers become an expiation for the sins committed in between, as long as one avoids the destructive (i.e., major) sins.

Sayyiduna Abu Umamah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Whenever the time for an obligatory prayer comes upon a Muslim, and he stands up, performs ablution and performs it well, then he offers the prayer and performs it well, Allah Almighty, because of this prayer, forgives the sins committed between this prayer and the previous prayer. Then when the time for the next obligatory prayer comes, and he offers the prayer and performs it well, the sins committed between this prayer and the previous prayer are forgiven. Thereafter, when the time for the next obligatory prayer comes and he offers the prayer and performs it well, the sins committed between this prayer and the previous prayer are forgiven.

It is narrated from Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him and his family) said: Indeed, every prayer wipes out the sins committed before it.