Narrated Abu Ishaq:

I asked Zaid bin Al-Arqam, "In how many Ghazawat did you take part in the company of Allah's Apostle?" He replied, "Seventeen." I further asked, "How many Ghazawat did the Prophet fight?" He replied, "Nineteen."

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ رَجَاءٍ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، قَالَ سَأَلْتُ زَيْدَ بْنَ أَرْقَمَ ـ رضى الله عنه ـ كَمْ غَزَوْتَ مَعَ رَسُولِ اللَّهِ ﷺ قَالَ سَبْعَ عَشْرَةَ. قُلْتُ كَمْ غَزَا النَّبِيُّ ﷺ قَالَ تِسْعَ عَشْرَةَ.