TSK · Ruth 4:5

Then Judah said to Onan,“Sleep with your brother’s wife and fulfill the duty of a brother-in-law to her so that you may raise up a descendant for your brother.”

Now yes, it is true that I am a guardian, but there is another guardian who is a closer relative than I am.

“Teacher, Moses said,‘If a man dies without having children, his brother must marry the widow and father children for his brother.’