Musannaf Ibn Abi Shayba 36:113

Zayd ibn al-Hubab narrated to us, he said: Layth ibn Sa’d narrated to me, from Safwan ibn Sulaym al-Zuhri, from Abu Busra, from al-Bara’ ibn ‘Azib, that the Messenger of Allah (may Allah bless him and grant him peace) fought nineteen military expeditions (ghazwah).