Tractate Derekh Eretz Rabbah
Concerning him who takes a wife for his infant son, who marries his daughter to an old man21Since she does not willingly accept him, she may be led to adultery. and who does a favour to one without notifying him22GRA reads ‘to a heathen’ to agree with Sanh. 76b (Sonc. ed., p. 517), the favour referring to the return of a lost article. Scripture declares, The Lord will not be willing to pardon him.23Deut. 29, 19.