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