Hadithcore
Riyad as-Salihin, 178

Abu Sa'id Al-Khudri (May Allah be pleased with him) reported:

Messenger of Allah (ﷺ) sent a detachment to Banu Lahyan tribe and remarked, "Let one of every two men get ready to advance, and both will earn the same reward". <b>[Muslim]</b>.

وعن أبي سعيد الخدري رضي الله عنه أن رسول الله صلى الله عليه وسلم، بعث بعثاً إلى بني لحيان من هذيل فقال‏:‏ ‏

‏ لينبعث من كل رجلين أحدهما والأجر بينهما‏

‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Introduction, Hadith 178
Sharh · explanationclick to expand
<b>Guidance from the Hadiths:</b><br> 1) Whoever aids someone in obeying Allah Almighty will have the same reward as his, without having this reward diminished in the least.<br> 2) Participating in doing good deeds ensures the reward for all.<br> 3) People are encouraged to do good deeds.<br> <br> <b>Benefit:</b><br> Aiding a fighter may take two forms:<br> 1- To provide him with a riding mount, provision, weapons and all that is needed for fight.<br> 2- To be a good successor for him in looking after his family.
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