Once, while I was sitting beside Zaid bin Al-Arqam, he was asked, "How many Ghazwat did the Prophet undertake?" Zaid replied, "Nineteen." They said, "In how many Ghazwat did you join him?" He replied, "Seventeen." I asked, "Which of these was the first?" He replied, "Al-ʿAshira or Al- ʿAshiru."
عَنْ أَبِي إِسْحَاقَ كُنْتُ إِلَى جَنْبِ زَيْدِ بْنِ أَرْقَمَ فَقِيلَ لَهُ كَمْ غَزَا النَّبِيُّ ﷺ مِنْ غَزْوَةٍ قَالَ تِسْعَ عَشْرَةَ قِيلَ كَمْ غَزَوْتَ أَنْتَ مَعَهُ قَالَ سَبْعَ عَشْرَةَ قُلْتُ فَأَيُّهُمْ كَانَتْ أَوَّلَ قَالَ الْعُسَيْرَةُ أَوِ الْعُشَيْرُ فَذَكَرْتُ لِقَتَادَةَ فَقَالَ الْعُشَيْرُ