﴿ فَلَمَّا فَصَلَ طَالُوتُ بِٱلْجُنُودِ قَالَ إِنَّ ٱللَّهَ مُبْتَلِيكُم بِنَهَرٍۢ فَمَن شَرِبَ مِنْهُ فَلَيْسَ مِنِّى وَمَن لَّمْ يَطْعَمْهُ فَإِنَّهُۥ مِنِّىٓ إِلَّا مَنِ ٱغْتَرَفَ غُرْفَةًۢ بِيَدِهِۦ ۚ فَشَرِبُوا۟ مِنْهُ إِلَّا قَلِيلًۭا مِّنْهُمْ ۚ فَلَمَّا جَاوَزَهُۥ هُوَ وَٱلَّذِينَ ءَامَنُوا۟ مَعَهُۥ قَالُوا۟ لَا طَاقَةَ لَنَا ٱلْيَوْمَ بِجَالُوتَ وَجُنُودِهِۦ ۚ قَالَ ٱلَّذِينَ يَظُنُّونَ أَنَّهُم مُّلَٰقُوا۟ ٱللَّهِ كَم مِّن فِئَةٍۢ قَلِيلَةٍ غَلَبَتْ فِئَةًۭ كَثِيرَةًۢ بِإِذْنِ ٱللَّهِ ۗ وَٱللَّهُ مَعَ ٱلصَّٰبِرِينَ ﴾

“And when Saul set out with his forces, he said: "Behold, God will now try you by a river: he who shall drink of it will not belong to me, whereas he who shall refrain from tasting it - he, indeed, will belong to me; but forgiven shall be he who shall scoop up but a single handful." However, save for a few of them, they all drank [their fill] of it. And as soon as he and those who had kept faith with him had crossed the river, the others said: "No strength have we today [to stand up] against Goliath and his forces!" [Yet] those who knew with certainty that they were destined to meet God, replied: "How often has a small host overcome a great host by God's leave! For God is with those who are patient in adversity."”

When they were given the Ark back, they accepted him as their king and went out with him to fight. (And when Saul set out) went forth (with the army) through a wasteland and became very thirsty, they asked him to provide them with water, (he) i.e. Saul (said: Lo! Allah will try you by a river) Allah will test you by a flowing river. (Whosoever therefore drinketh thereof) from the river (he is not of me) he is not going to be with me in the fight against my enemy and will not go further, (and whoever tasteth it not he is of me) against my enemy, but then he made an exception, (save him who taketh (thereof) in the hollow of his hand) and this was enough for them, their beasts and transportation. (But they drank thereof) when they reached the river however they drank as much as they wanted to, (all save a few of them) 313 men who did not drink except as they had been directed. (And after he had crossed) the river, (he) i.e. Saul (and those who believed with him, they said) to each other: (We have no power this day against Goliath and his hosts. But those who knew) and were convinced (that they would meet Allah) in person after they died (exclaimed: How many a little company) of believers (hath overcome a mighty host) of unbelievers (by Allah's leave!) by the help of Allah. (And Allah is with the steadfast) He assists the steadfast in war by giving them victory.