9:46Had they wanted to mobilize, they would have made preparations for it; but God disliked their participation, so he held them back, and it was said, “Stay behind with those who stay behind.”

9:81Those who stayed behind rejoiced at their staying behind the Messenger of God. And they hated to strive with their wealth and their lives in God’s way. And they said, “Do not venture out in the heat.” Say, “The Fire of Hell is much hotter, if they only understood.”

9:83If God brings you back to a party of them, and they ask your permission to go out, say, “You will not go out with me, ever, nor will you ever fight an enemy with me. You were content to sit back the first time, so sit back with those who stay behind.”

9:86When a chapter is revealed, stating: “Believe in God and strive with His Messenger,” the prominent among them ask you for exemption. They say, “Allow us to stay with those who stay behind.”

9:87They prefer to be with those who stay behind. Their hearts were sealed, so they do not understand.

9:90Some of the Desert-Arabs came to make excuses, asking to be granted exemption, while those who were untrue to God and His Messenger stayed behind. A painful punishment will afflict those among them who disbelieved.

9:93But blame is on those who ask you for exemption, although they are rich. They are content to be with those who stay behind. God has sealed their hearts, so they do not know.

9:118Also towards the three who were left behind. Then, when the earth, as vast as it is, closed in on them, and their very souls closed in on them, and they realized that there was no refuge from God, except in Him, He redeemed them, so that they may repent. God is the Redeemer, the Merciful.

9:120It is not for the inhabitants of Medina and the Desert-Arabs around them to stay behind the Messenger of God, nor to prefer themselves to him. That is because they never suffer any thirst, nor fatigue, nor hunger in the cause of God, nor do they take one step that enrages the disbelievers, nor do they gain anything from an enemy, but it is recorded to their credit as a righteous deed. God does not waste the reward of the righteous.

9:122It is not advisable for the believers to march out altogether. Of every division that marches out, let a group remain behind, to gain understanding of the religion, and to notify their people when they have returned to them, that they may beware.