أَخْبَرَنَا هَنَّادُ بْنُ السَّرِيِّ، عَنِ ابْنِ الْمُبَارَكِ، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَثَلُ الْمُجَاهِدِ فِي سَبِيلِ اللَّهِ - وَاللَّهُ أَعْلَمُ بِمَنْ يُجَاهِدُ فِي سَبِيلِهِ - كَمَثَلِ الصَّائِمِ الْقَائِمِ الْخَاشِعِ الرَّاكِعِ السَّاجِدِ " .
It was narrated that Abu Hurairah said: "I heard the Messenger of Allah (PBUH) say: 'The parable of a Mujahid who strives in the cause of Allah - and Allah knows best who in His cause - is that of one who fasts, prays Qiyam, focuses with proper humility, bows and prostrates.'" Translation Not Available
Book Ref: Sunan An Nisai Book 25 Hadith 3127
Web Ref: Sunan An Nisai Vol 1 Book 25 Hadith 3129