Hazrat Abu Ishaq says that I was sitting beside Hazrat Zaid bin Arqam (may Allah be pleased with him). He was asked, "How many expeditions did the Noble Prophet (peace and blessings be upon him) undertake?" He said, "Nineteen." I asked, "In how many expeditions did you accompany the Prophet (peace and blessings be upon him)?" He said, "In seventeen." I asked, "Which was the very first expedition of the Prophet (peace and blessings be upon him)?" He said, "Usayrah or Ushayrah." (Abu Ishaq says) Then I mentioned this to Qatadah, so he said that the correct word is "Ushayrah."