I would not wipe my muddy boots in him.
More Hungarian Proverbs:
It is an ugly bird that defiles its own nest.Hungarian
Like wash-basin, like towel.
Hungarian
A bashful beggar has an empty wallet.
Hungarian
It is good to have an old man at home.
Hungarian
Have a close look at the mother and then marry her daughter.
Hungarian
As it falls so it plumps.
Hungarian