Sahih al-Bukhari 4109
Sahih al-Bukhari · Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · The Ghazwa of Al-Khandaq or Al-Ahzab Battle
Narrated Sulaiman bin Surd:
حَدَّثَنَا أَبُو نُعَيْمٍ ، حَدَّثَنَا سُفْيَانُ ، عَنْ أَبِي إِسْحَاقَ ، عَنْ سُلَيْمَانَ بْنِ صُرَدٍ ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم يَوْمَ الأَحْزَابِ " نَغْزُوهُمْ وَلاَ يَغْزُونَنَا " .
On the day of Al-Ahzab (i.e. clans) the Prophet (ﷺ) said, (After this battle) we will go to attack them(i.e. the infidels) and they will not come to attack us."