Sahih al-Bukhari, Hadith 2797 ⓘ
Narrated Abu Huraira: The Prophet said, "By Him in Whose Hands my life is! Were it not for some men amongst the believers who dislike to be left behind me and whom I cannot provide with means of conveyance, I would certainly never remain behind any Sariya' (army-unit) setting out in Allah's Cause. By Him in Whose Hands my life is! I would love to be martyred in Allah's Cause and then get resurrected and then get martyred, and then get resurrected again and then get martyred and then get resurrected again and then get martyred.
حَدَّثَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، قَالَ أَخْبَرَنِي سَعِيدُ بْنُ الْمُسَيَّبِ، أَنَّ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " وَالَّذِي نَفْسِي بِيَدِهِ لَوْلاَ أَنَّ رِجَالاً مِنَ الْمُؤْمِنِينَ لاَ تَطِيبُ أَنْفُسُهُمْ أَنْ يَتَخَلَّفُوا عَنِّي، وَلاَ أَجِدُ مَا أَحْمِلُهُمْ عَلَيْهِ، مَا تَخَلَّفْتُ عَنْ سَرِيَّةٍ تَغْزُو فِي سَبِيلِ اللَّهِ، وَالَّذِي نَفْسِي بِيَدِهِ لَوَدِدْتُ أَنِّي أُقْتَلُ فِي سَبِيلِ اللَّهِ ثُمَّ أُحْيَا، ثُمَّ أُقْتَلُ ثُمَّ أُحْيَا، ثُمَّ أُقْتَلُ ثُمَّ أُحْيَا، ثُمَّ أُقْتَلُ " .
also referenced under: Book 56, Hadith 15 (In-Book) & Volume 4, Book 52, Hadith 54 (USC-MSA)