REWARD OF FASTING DURING JIHAD H 1368 "Whosoever observes the fast for a day during Jihad for the Sake of Allah will find that Allah has dug a moat between him and the Fire as wide as the distance between heaven and earth." R 1368 Tirmidhi with a chain up to Abu Umamah who related that the Messenger of Allah, praise and peace be upon him, said this.
1340- وعن أَبي أُمَامَة رضي الله عنه ، عن النبيِّ صلى الله عليه وآله وسلم ، قَالَ : "مَنْ صَامَ يَوْماً في سَبيلِ اللهِ جَعَلَ اللهُ بَيْنَهُ وَبَيْنَ النَّارِ خَنْدَقاً كما بَيْنَ السَّمَاءِ والأَرْضِ" رواه الترمذي ، وقال : "حديث حسن صحيح" .