Anas said “The Prophet (ﷺ) used to attack at the time of the dawn prayer and hear. If he heard a call to prayer, he would refrain from them, otherwise would attack (them).
Sunan Abi Dawud Book 15, Hadith 158
← Previous Hadith Ibn ‘Awn said “I wrote to Nafi’ asking him about summoning the polytheists (to Islam) at the time of fighting. So, he wrote to me “This was in the early days of Islam. The Prophet of Allaah(ﷺ) attacked Banu Al Mustaliq while they were inattentive and their cattle were drinking water. So their fighters were killed and the survivors (i.e., women and children) were taken prisoners. On that day Juwairiyyah daughter of Al Harith was obtained. ‘Abd Allaah narrated this to me, he was in that army.”

Abu Dawud said “This is a good tradition narrtted by Ibn ‘Awn from Nafi’ and no one shared him in narrating it.”

Sunan Abi Dawud Book 15, Hadith 157 Next Hadith → The Messenger of Allah (ﷺ) sent us in a detachment and said (to us): If you see a mosque or hear a mu'adhdhin (calling to prayer), do not kill anyone.

Sunan Abi Dawud Book 15, Hadith 159