TSK
مراجع Treasury of Scripture Knowledge في NET.
But Onan knew that the child would not be considered his. So whenever he slept with his brother’s wife, he wasted his emission on the ground so as not to give his brother a descendant.
He said,“Who are you?” She replied,“I am Ruth, your servant. Marry your servant, for you are a guardian of the family interests.”
“Teacher, Moses said,‘If a man dies without having children, his brother must marry the widow and father children for his brother.’
They asked him,“Teacher, Moses wrote for us that if a man’s brother dies leaving a wife but no children, that man must marry the widow and father children for his brother.