Abu Hurairah (May Allah be pleased with him)reported:
The Prophet (ﷺ) said, "The five daily (prescribed) Salat, and Friday (prayer) to the next Friday (prayer), and the fasting of Ramadan to the next Ramadan, is expiation of the sins committed in between them, so long as major sins are avoided."[Muslim].
App reference: Book 9, Hadith 159
Arabic/English book reference: Book 9, Hadith 1149