there is

Ruth 4:1
Meanwhile Boaz went to the gate and sat down there. Soon the kinsman-redeemer of whom he had spoken came along, and Boaz said, "Come over here, my friend, and sit down." So he went over and sat down.

Matthew 7:12
In everything, then, do to others as you would have them do to you. For this is the essence of the Law and the prophets.

1 Thessalonians 4:6
and no one should ever exploit or take advantage of his brother in this regard, because the Lord will avenge all such acts, as we have already told you and solemnly warned you.