That's a slap to the face. But you don't wanna do that to your worse enemies. When someone is in dire need of help, whether he's your friend or enemy, you don't stomp on the face of your enemy that has already fallen on the ground. If you want to donate, just be a cheerful giver. Coz that's what the bible says be a cheerful giver.. Amen
sometimes we can help even our worst enemy, life is full of surprises. I think that if a person finds himself in a critical situation, in 99% of cases he will not care where these funds come from if they can affect his future life right now. In such situations, the question of faith and principles is definitely fades into the background.