The companions of (the Prophet) Muhammad who took part in Badr, told me that their number was that of Saul's (i.e. Talut's) companions who crossed the river (of Jordan) with him and they were over three-hundred-and-ten men. By Allah, none crossed the river with him but a believer. (See Qur'an 2:249)

حَدَّثَنِي أَصْحَابُ مُحَمَّدٍ ﷺ مِمَّنْ شَهِدَ بَدْرًا أَنَّهُمْ كَانُوا عِدَّةَ أَصْحَابِ طَالُوتَ الَّذِينَ جَازُوا مَعَهُ النَّهَرَ بِضْعَةَ عَشَرَ وَثَلاَثَمِائَةٍ قَالَ الْبَرَاءُ لاَ وَاللَّهِ مَا جَاوَزَ مَعَهُ النَّهَرَ إِلاَّ مُؤْمِنٌ

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 the were over three-hundred-and-ten men.

أَنَّ عِدَّةَ أَصْحَابِ بَدْرٍ عَلَى عِدَّةِ أَصْحَابِ طَالُوتَ الَّذِينَ جَاوَزُوا مَعَهُ النَّهَرَ وَلَمْ يُجَاوِزْ مَعَهُ إِلاَّ مُؤْمِنٌ بِضْعَةَ عَشَرَ وَثَلاَثَمِائَةٍ

We used to say that the warriors of Badr were over three-hundred-and-ten, as many as the Companions of Saul who crossed the river with him; and none crossed the river with him but a believer.

أَنَّ أَصْحَابَ بَدْرٍ ثَلاَثُمِائَةٍ وَبِضْعَةَ عَشَرَ بِعِدَّةِ أَصْحَابِ طَالُوتَ الَّذِينَ جَاوَزُوا مَعَهُ النَّهَرَ وَمَا جَاوَزَ مَعَهُ إِلاَّ مُؤْمِنٌ

“We were talking about how, on the Day of Badr, the Companions of the Messenger of Allah ﷺ numbered three hundred ten and something, the same number as the Companions of (Talut) who crossed the river with him, and no one crossed the river with him but a believer.”

أَنَّ أَصْحَابَ رَسُولِ اللَّهِ ﷺ كَانُوا يَوْمَ بَدْرٍ ثَلاَثَمِائَةٍ وَبِضْعَةَ عَشَرَ عَلَى عِدَّةِ أَصْحَابِ طَالُوتَ مَنْ جَازَ مَعَهُ النَّهَرَ وَمَا جَازَ مَعَهُ إِلاَّ مُؤْمِنٌ

We used to say that the warriors of Badr were over three-hundred-and-ten, as many as the Companions of Saul who crossed the river with him; and none crossed the river with him but a believer. (Using translation from Bukhārī 3959)

أَنَّ أَصْحَابَ بَدْرٍ كَانُوا ثَلَاثَ مِائَةٍ وَبِضْعَةَ عَشَرَ عَلَى عِدَّةِ أَصْحَابِ طَالُوتَ الَّذِينَ جَازُوا مَعَهُ النَّهْرَ وَمَا جَازَ مَعَهُ إِلَّا مُؤْمِنٌ»

"حَشَر أَصْحَاب "مُحَمَّد ﷺ مِمَّنْ شَهِدَ بَدْرًا أَنَّهُمْ كَانُوا عدَّةَ أَصْحَاب طَالُوتَ الَّذينَ جَاوَزُوا مَعَهُ النَّهْرَ ثَلَثَمِائَةٍ وَبِضْعَةَ عَشَرَ، وَلَا وَالله مَا جَاوَزَ مَعَهُ النَّهْرَ إِلَّا مُؤْمِنٌ".

"عَنِ الْبَرَاءِ قَالَ: كَانَ أَصْحَابُ رَسُولِ الله ﷺ يَوْمَ بَدْرٍ بِضْعَةَ عَشَرَ وَثَلَاثمِائَةٍ، وَكُنَّا نَتَحَدَّثُ أَنَّهُمْ عَلَى عِدَّةِ أَصْحَابِ طَالُوتَ الَّذِينَ جَاوَزُوا مَعَهُ النَّهْرَ، وَمَا جَاوَزَ مَعَهُ إِلَّا مُؤْمِنٌ".