Rav says that even if the wife is Mochel a husband should not leave the house for more than every other month. e.
Rebbi Yochanan says that a husband should not leave the house for more than one month out of three.
Rav says that a sigh breaks half the body of a person and Rebbi Yochanan says it breaks the entire body. (1)
The wives of Talmid Chacham shake off sleep in this world and will arrive in Olam ha’Ba.
The Onah of laborers that work in town is twice a week and for those that work out of town it is once a week.
The Onah of a donkey driver is once a week and of a camel driver once every thirty days and a for a sailor it is once in 6 months.
Even a sailor who vows not to have relations with his wife for one week must divorce her.(2)
If the husband is a donkey driver at the time of marriage he may not become a camel driver without the permission of his wife
The Chachamim hold that students may leave the house for 2-3 years for the purpose of learning Torah even without permission from their wives. (4)
The Onah of a Talmid Chacham is every Erev Shabbos.
Rebi descended from Shftayah who was the son of Avital (one of the wives of Dovid ha’Melech.)
Rebbi Chiya descended from the Shimi the brother of Dovid ha’Melech.
At first Klal Yisrael was destined to build the Mikdash only after entering Eretz Yisrael, but at the end they built a Mishkan in the Midbar
REBBI Akiva had 12,000 students after he completed 12 years in the Bais ha'Midrash.
A BIT MORE
1. However this only applies to sighing over a recent tragedy it doesn’t apply to a sigh from an ancient tragedy such as the destroyed of the Bais ha'Mikdash.
2. Because if it wasn’t for the vow his wife is always hoping that her husband may come home unexpectedly at any time. .
3. Even though a camel driver makes more money than a donkey driver the woman prefers to have her husband at home more often than to have the extra cash.
4. The Chachamim argue with the opinion of Rebbi Eliezer in the Mishnah who holds that students may leave for no more than thirty days at a time without permission from their wives.