After all, to the person who is good in God's sight, he gives wisdom, knowledge, and joy, but to the sinner he gives the troublesome task of acquiring and accumulating in order to leave it to someone who is good in the sight of God. This also is pointless and chasing after the wind.

Unjust gain

You are not to take interest or profit from him. Instead, you are to fear your God and let your relative live with you.

if he doesn't lend with usury or exact interest, but instead refuses to participate in what is unjust, if he administers true justice between people,

Pity

All the relatives of a poor person shun him how much more do his friends avoid him! Though he runs after them pleading, they aren't around.

He will restore the lamb four times its value, because he did this thing, and because he did it without compassion."

General references

"If you loan money to my people, to the poor among you, don't be like a creditor to them and don't impose interest on them.

"Any food that may be eaten, but into which water has soaked, becomes unclean. Any drink that may be drunk in any of these vessels becomes unclean,

So if you had sold property to a neighbor or had acquired land from your neighbor, you are not to cheat one another.