(102) باب دُعَاءِ النَّبِيِّ صلى الله عليه وسلم إِلَى الإِسْلاَمِ وَالنُّبُوَّةِ، وَأَنْ لاَ يَتَّخِذَ بَعْضُهُمْ بَعْضًا أَرْبَابًا مِنْ دُونِ اللَّهِ
Narrated Anas:
Whenever Allah's Messenger (ﷺ) attacked some people, he would never attack them till it was dawn. If he heard the Adhan (i.e. call for prayer) he would delay the fight, and if he did not hear the Adhan, he would attack them immediately after dawn. We reached Khaibar at night.
Reference: Sahih al-Bukhari 2943
In-book reference: Book 56, Hadith 155
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 193