Sahih Muslim 1365 h
It has been narrated (through another chain of transmitters) on the authority of the same narrator (i. e. Anas) who said:
I was riding behind Abu Talha on the day of the Battle of Khaibar (and we were riding so close to the Prophet that) my foot would touch his We encountered the people at sunrise when they had come out with their axes, spades and strings driving their cattle along. They shouted (in surprise): Muhammad has come along with his force! The Messenger of Allah (ﷺ) said: Khaibar shall face destruction. Behold! when we descend in the city-square of a people, it is a bad day for those who have been warned (but have not taken heed). Allah, the Glorious and Majestic, inflicted defeat upon them.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَفَّانُ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، حَدَّثَنَا ثَابِتٌ، عَنْ أَنَسٍ، قَالَ كُنْتُ رِدْفَ أَبِي طَلْحَةَ يَوْمَ خَيْبَرَ وَقَدَمِي تَمَسُّ قَدَمَ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ فَأَتَيْنَاهُمْ حِينَ بَزَغَتِ الشَّمْسُ وَقَدْ أَخْرَجُوا مَوَاشِيَهُمْ وَخَرَجُوا بِفُئُوسِهِمْ وَمَكَاتِلِهِمْ وَمُرُورِهِمْ فَقَالُوا مُحَمَّدٌ وَالْخَمِيسَ ‏.‏ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏
"‏ خَرِبَتْ خَيْبَرُ إِنَّا إِذَا نَزَلْنَا بِسَاحَةِ قَوْمٍ فَسَاءَ صَبَاحُ الْمُنْذَرِينَ ‏"‏ ‏.‏ قَالَ فَهَزَمَهُمُ اللَّهُ عَزَّ وَجَلَّ ‏.‏