Core Textתָּנָא בַּר קַפָּרָא: אַלְמָנָה נִשֵּׂאת בַּחֲמִישִׁי וְנִבְעֶלֶת בַּשִּׁשִּׁי, הוֹאִיל וְנֶאֶמְרָה בּוֹ בְּרָכָה לְאָדָם, שֶׁנֶּאֱמַר וַיְבָרֶךְ אֹתָם אֱלֹהִים וַיֹּאמֶר לָהֶם אֱלֹהִים פְּרוּ וּרְבוּ.
Bar Kappara taught: A widow is married on Thursday and has relations on Friday, since a blessing was said on that day for man, as it is said “And God blessed them... Be fruitful and multiply.”