סנן אל-נסאאי #3140
Sahih (Authentic)
Hajj
الْعُمْرَةُ إِلَى الْعُمْرَةِ كَفَّارَةٌ لِمَا بَيْنَهُمَا وَالْحَجُّ الْمَبْرُورُ لَيْسَ لَهُ جَزَاءٌ إِلاَّ الْجَنَّةُ
The Messenger of Allah (ﷺ) said: 'An Umrah to the next Umrah is an expiation for what is between them, and an accepted Hajj has no reward other than Paradise.'
שרשרת המסירה (איסנאד)
Narrated Abu Huraira