Sahih al-Bukhari 3958
Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · Narrated by Al-Bara
Arabic
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ رَجَاءٍ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ، قَالَ كُنَّا أَصْحَابَ مُحَمَّدٍ صلى الله عليه وسلم نَتَحَدَّثُ أَنَّ عِدَّةَ أَصْحَابِ بَدْرٍ عَلَى عِدَّةِ أَصْحَابِ طَالُوتَ الَّذِينَ جَاوَزُوا مَعَهُ النَّهَرَ، وَلَمْ يُجَاوِزْ مَعَهُ إِلاَّ مُؤْمِنٌ، بِضْعَةَ عَشَرَ وَثَلاَثَمِائَةٍ.
English translation
Narrated Al-Bara:We, the Companions of Muhammad used to say that the number of the warriors of Badr was the same as the number of Saul's companions who crossed the river (of Jordan) with him, and none crossed the river with him but a believer, and they were over three-hundred-and-ten men
Reference: Sahih al-Bukhari 3958, Book of Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi). English translation by Dr. Muhammad Muhsin Khan.