Narrated Abu 'Is-haq: 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-`Ashira or Al- `Ashiru.