(20) And [mention, O Muhammad], when Moses said to his people, "O my people, remember the favor of Allah upon you when He appointed among you prophets and made you possessors and gave you that which He had not given anyone among the worlds. (21) O my people, enter the Holy Land which Allah has assigned to you and do not turn back [from fighting in Allah'scause] and [thus] become losers. (22) They said, "O Moses, indeed within it is a people of tyrannical strength, and indeed, we will never enter it until they leave it; but if they leave it, then we will enter. (23) Said two men from those who feared [to disobey] upon whom Allah had bestowed favor, "Enter upon them through the gate, for when you have entered it, you will be predominant. And upon Allah rely, if you should be believers. (24) They said, "O Moses, indeed we will not enter it, ever, as long as they are within it; so go, you and your Lord, and fight. Indeed, we are remaining right here. (25) [Moses] said, "My Lord, indeed I do not possess except myself and my brother, so part us from the defiantly disobedient people. (26) [Allah] said, "Then indeed, it is forbidden to them for forty years [in which] they will wander throughout the land. So do not grieve over the defiantly disobedient people.
I have witnessed a situation from Ibn Al-Aswad, and it is more beloved to me that I was the one in that situation than anything else. He came to the Messenger of Allah (PBUH) while he was invoking curses upon the disbelievers, and he said: By Allah, O Messenger of Allah, we will not say as the Children of Israel said to Moses: {..go, you and your Lord, and fight, we are staying right here} [Al-Ma'idah: 24] Rather, we will fight on your right and on your left. In front of you, and behind you. Narrator said: I saw the face of the Messenger of Allah (PBUH) shining, and that pleased him.