Mukhtasar Bukhari

It is narrated from Sayyiduna Zaid bin Arqam (may Allah be pleased with him) that he was asked, "How many expeditions (ghazwat) did the Noble Prophet (peace and blessings of Allah be upon him) undertake?" He replied, "Nineteen (19)." Then he was asked, "In how many expeditions did you accompany the Noble Prophet (peace and blessings of Allah be upon him)?" He said, "In seventeen expeditions." Then he was asked, "Which was the first of these expeditions?" He replied, "The expedition of Ushayrah or Usayrah."