Sahih al-Bukhari 4272
Sahih al-Bukhari · Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · The dispatch of Usama bin Zaid to Al-Huraqat
Narrated Salama bin Al-Akwa`:
حَدَّثَنَا أَبُو عَاصِمٍ الضَّحَّاكُ بْنُ مَخْلَدٍ ، حَدَّثَنَا يَزِيدُ ، عَنْ سَلَمَةَ بْنِ الأَكْوَعِ ـ رضى الله عنه ـ قَالَ غَزَوْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم سَبْعَ غَزَوَاتٍ، وَغَزَوْتُ مَعَ ابْنِ حَارِثَةَ اسْتَعْمَلَهُ عَلَيْنَا.
I fought in nine Ghazwa-t along with the Prophet, I also fought along with Ibn Haritha when the Prophet made him our commander.