Sahih Muslim Book - 33, Hadith - 4879

حَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ حَدَّثَنِى أَبُو هَانِئٍ الْخَوْلاَنِىُّ عَنْ أَبِى عَبْدِ الرَّحْمَنِ الْحُبُلِىِّ عَنْ أَبِى سَعِيدٍ الْخُدْرِىِّ أَنَّ رَسُولَ اللَّهِ -صلى الله عليه وسلم- قَالَ « يَا أَبَا سَعِيدٍ مَنْ رَضِىَ بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ نَبِيًّا وَجَبَتْ لَهُ الْجَنَّةُ ». فَعَجِبَ لَهَا أَبُو سَعِيدٍ فَقَالَ أَعِدْهَا عَلَىَّ يَا رَسُولَ اللَّهِ فَفَعَلَ ثُمَّ قَالَ « وَأُخْرَى يُرْفَعُ بِهَا الْعَبْدُ مِائَةَ دَرَجَةٍ فِى الْجَنَّةِ مَا بَيْنَ كُلِّ دَرَجَتَيْنِ كَمَا بَيْنَ السَّمَاءِ وَالأَرْضِ ». قَالَ وَمَا هِىَ يَا رَسُولَ اللَّهِ قَالَ « الْجِهَادُ فِى سَبِيلِ اللَّهِ الْجِهَادُ فِى سَبِيلِ اللَّهِ ».

It was narrated from Abu Sa'eed Al-Khudri that the Messenger of Allah (s.a.w) said: "O Abu Sa'eed, whoever is content with Allah as his Lord, Islam as his religion and Muhammad (s.a.w) as his Prophet, Paradise is guaranteed for him." Abu Sa'eed wondered at that, and said: "Say it to me again, O Messenger of Allah." He did that, then he said: "And there is something else by means of which a person will be raised one hundred levels in Paradise, and the distance between each two levels is like the distance between heaven and earth." He said: "What is it, O Messenger of Allah?" He said: "Jihad in the cause of Allah, Jihad in the cause of Allah."