صحيح البخاري
From Sahih Bukhari (Hadith 4109):
Narrated Sulaiman bin Surad: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
Reference: Bukhari 4109