Soncino English Talmud
Niddah
Daf 65a
Menjamin of Saksanah was embarking on a journey to the locality of Samuel where he intended to act according to the ruling of Rab, even where the woman had observed a discharge, assuming that Rab drew no distinction between one who did and one who did not observe a discharge, but he died while he was underway. Samuel accordingly applied to Rab the Scriptural text, There shall no mischief befall the righteous. R. Hinena b. Shelemya observed: As soon as a person's teeth fall out his means of a livelihood are reduced; for it is said: And I also have given you cleanness of teeth in all your cities, and want of bread in all your places. IF SHE OBSERVED A DISCHARGE WHILE SHE WAS STILL etc. Our Rabbis taught: If a girl observed a discharge while she was still in her father's house, Beth Hillel ruled: She is permitted marital intercourse all the night and, moreover, she is allowed a full 'onah. And how long is a full 'onah? — R. Simeon b. Gamaliel explained: A night and half a day. But do we require an 'onah to be so long? Is not [such a requirement] rather incongruous with the following: If a person's winepresses or oil-presses were unclean and he desired to prepare his wine and oil respectively in conditions of cleanness, how is he to proceed? He rinses the boards, the twigs and the troughs;
Sefaria