«الصلوات الخمس والجمعة إلى الجمعة ورمضان إلى رمضان مكفرات لما بينهن إذا اجتنبت الكبائر»
The Prophet (peace and blessings be upon him) said:
"The five prayers, from one Friday to the next Friday, and from one Ramadan to the next Ramadan, are an expiation for the sins committed between them, provided that major sins are avoided."
Hadith Referenceصحیح الجامع الصغیر / حرف الصاد / 3875