And if they had intended to go forth, they would certainly have provided equipment for it, but Allah did not like their going forth, so He withheld them, and it was said (to them): Hold back with those who hold back.

Therefore if Allah brings you back to a party of them and then they ask your permission to go forth, say: By no means shall you ever go forth with me and by no means shall you fight an enemy with me; surely you chose to sit the first time, therefore sit (now) with those who remain behind.