Sahih al-Bukhari 2972
Sahih al-Bukhari · Book 56: Fighting for the Cause of Allah (Jihaad) · The wages given to fight on somebody else's behalf
Narrated Abu Huraira:
حَدَّثَنَا مُسَدَّدٌ ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ ، عَنْ يَحْيَى بْنِ سَعِيدٍ الأَنْصَارِيِّ ، قَالَ حَدَّثَنِي أَبُو صَالِحٍ ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَوْلاَ أَنْ أَشُقَّ عَلَى أُمَّتِي مَا تَخَلَّفْتُ عَنْ سَرِيَّةٍ، وَلَكِنْ لاَ أَجِدُ حَمُولَةً، وَلاَ أَجِدُ مَا أَحْمِلُهُمْ عَلَيْهِ، وَيَشُقُّ عَلَىَّ أَنْ يَتَخَلَّفُوا عَنِّي، وَلَوَدِدْتُ أَنِّي قَاتَلْتُ فِي سَبِيلِ اللَّهِ فَقُتِلْتُ، ثُمَّ أُحْيِيتُ ثُمَّ قُتِلْتُ، ثُمَّ أُحْيِيتُ " .
Allah's Messenger (ﷺ) said, "Were it not for the fear that it would be difficult for my followers, I would not have remained behind any Sariya, (army-unit) but I don't have riding camels and have no other means of conveyance to carry them on, and it is hard for me that my companions should remain behind me. No doubt I wish I could fight in Allah's Cause and be martyred and come to life again to be martyred and come to life once more."