(5) باب الصَّلَوَاتُ الْخَمْسُ وَالْجُمُعَةُ إِلَى الْجُمُعَةِ وَرَمَضَانُ إِلَى رَمَضَانَ مُكَفِّرَاتٌ لِمَا بَيْنَهُنَّ مَا اجْتُنِبَتِ الْكَبَائِرُ.
Abu Huraira reported that the Messenger of Allah (ﷺ) said:
The five (daily) prayers and one Friday prayer to (the next) Friday prayer are expiations (for the sins committed in the intervals) between them.
Reference: Sahih Muslim 233b
In-book reference: Book 2, Hadith 18
USC-MSA web (English) reference(deprecated numbering scheme): Book 2, Hadith 449