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Takhrij Hadith 1758: "Whoever does not go out…"
It was narrated from Abu Umamah, from the Prophet (peace and blessings be upon him), that he said:
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Whoever does not go out for battle, equip one who goes out for battle, or take good care of the family of one who goes out for battle in his absence, Allah (Glorified is He) will afflict him with a calamity before the Day of Resurrection.”