ខគម្ពីរពេញនិយមពី Bereshis 38

ចែក​រំលែក

And the thing which he did was rah in the eyes of HASHEM; therefore He slaughtered him also.

And Onan knew that the zera should not be his; and it came to pass, when he went in unto eshet achiv, that he spilled it on the ground, lest he should give zera to achiv.