Mark 9:41 “ For truly, I say to you, whoever gives you a cup of water to drink because you bear the name of Christ, will by no means lose his reward.”
I’m sure we are rewarded for our small kindnesses, perhaps we grow our capacity and stimulate our ability to love when we do such things, that would be instant reward.
The context alters the meaning a little maybe? The disciples have been discussing the activities of an exorcist unattached to their group who has been casting out demons in the name of Our Lord and whether to forbid this stranger from doing so. Our Lord says no, it’s fine. It’s well worth reading Mark 9:38-41 I think it is revealing as ever.