Pesachim 112B

שאין כל אצבעות שוות.

not all fingers are equal. It is possible that intimate sex with her second husband might not be as pleasing as with the first, leading her to disparage and even hate him.

מצוה וגוף גדול ⁠— אוכל פירות ולא שכר. מצוה וגוף טהור ⁠— נושא אשה ולו בנים.

R' Akiva continued to offer instruction: It is a mitzva and a great material benefit to one’s body to eat fruits without payment. That is, when one lends money and takes land as collateral, deducting from the loan the value of the fruit he eats, both the borrower and the lender benefit from this practice. One who both performs a mitzva and retains a pure body is one who marries a woman, as his thoughts will remain pure and he will merit to have children.

ארבעה דברים צוה רבינו הקדוש את בניו: אל תדור בשכנציב משום דליצני הוו, ומשכו לך בליצנותא.

The Talmud cites more instructions issued by a Sage to his heirs. Our holy rabbi, R' Yehuda HaNasi, commanded his sons to do 4 matters: Do not live in Shekhantziv in Babylonia, because they are mockers. And they will draw you in to their mockery and lead you to abandon your Torah studies.

ואל תשב על מטת ארמית. איכא דאמרי: דלא תיגני בלא קרית שמע. ואיכא דאמרי: דלא תינסב גיורתא.

R' Yehuda HaNasi further commanded his sons: Do not sit on the bed of an Aramean woman. This advice is explained in different ways. Some say it means that you should not go to sleep without reciting Shema, as a Jew who does this acts like a non-Jew. And some say it means that you should not marry a convert, i.e., a Jewish woman who was once an Aramean.

ואיכא דאמרי: ארמאית ממש, ומשום מעשה דרב פפא.

And some say that R' Yehuda HaNasi meant the actual bed of an Aramean woman, and this is due to the concern for a similar outcome to the later incident involving Rav Pappa. The incident in question was as follows: Rav Pappa entered the house of a non-Jew woman to collect a debt. The woman asked him to sit on her bed until she brought the money. As it turned out, she had placed her dead baby under the bed. Rav Pappa was subsequently accused of killing the baby and was forced to flee the district.