There are four types of giving, four types of charity: tamoguni (charity in ignorance), rajoguni (charity in passion), sattvaguni (charity in goodness), and nirguni or Divine charity.
If you give to someone who is tamasic (in ignorance), you have given him money and he has bought alcohol with it, and drinking alcohol is one of the pañch mahāpāp (the five greatest sins) he has committed one of the biggest sins. And worse than that, he has bought a gun with the money that you gave him. He has shot someone. He has murdered someone; so he has committed a crime, a heinous crime, but you’re also party to that crime. You are also responsible, partially, for that crime he has committed. Had you not given him the money, he would not have been able to buy that gun. He would not have murdered that person.
“But I didn’t give him the money for that! I gave it to him to buy some food!”
But it doesn’t matter. He made misuse of that money. So do not give money; do not give charity indiscriminately. And the end result, the consequence of giving tamoguni charity, is residence in hell for some time.
Now number two is rajoguni giving. You give to someone who is worldly by nature. And you have fed him, you have fed those people,and you have given them clothing. So in your next life, you will have enough clothes to wear, you’ll have enough food to eat, but also your mind will be filled with worldly thoughts, because you have given to someone who is worldly.
If you give in the name of a devatā (celestial deity), you have donated to a devatā or a sāttvic (pure) person living on earth, then the end result is that you will go to swarg lok (the heavenly realm) after death - even that is undesirable.
But if you give the fourth and the greatest charity, and that is if you give to God and to a Godly Saint, a mahāpuruṣh (great Divine personality), and Guru, then you get Divine benefit.
