Responsa for Gittin 150:16
רבא אמר לא קשיא כאן בסתם כאן במפרש
We have learnt: HOW LONG IS SHE TO GIVE IT SUCK? TWO YEARS, RABBI JUDAH SAYS, EIGHTEEN MONTHS. If we accept the view of Raba, this creates no difficulty, but if we accept that of R. Ashi, why should we require two years or eighteen months? One day should be enough? — What it means is this: One day in the next two years, to exclude the period after two years; one day in the next eighteen months, to exclude the period after eighteen months. An objection was raised [against this from the following]: [IF HE SAYS] THIS IS YOUR GET ON CONDITION THAT YOU LOOK AFTER MY FATHER FOR TWO YEARS, ON CONDITION THAT YOU SUCKLE MY CHILD FOR TWO YEARS, THEN IF THE CHILD DIES, OR THE FATHER SAYS, I DON'T WANT YOU TO LOOK AFTER ME, EVEN THOUGH SHE GAVE NO CAUSE FOR COMPLAINT, THE GET IS NOT VALID.
Teshuvot Maharam
A. The accepted law is that she must wait 24 moon-months (from the day the child is born), i. e. months of alternating length of 29 and 30 days. If one of the years is a leap year, she must wait 25 such months. However, were I not afraid to differ with the decisions of my teachers, I would require her to wait 24 full months of 30 days each, or 720 days, and in a leap year 25 moon-months of alternating length, in order to be sure to comply with all possible interpretations of the opinions of the authorities of the Talmud.
This Responsum is addressed to R. Yekutiel.
SOURCES: Pr. 79. Cf. Mord. Yeb. 19; Israel Bruno, Responsa 192; ibid. 193; ibid. 194; Terumat Hadeshen 216; Isserlein, Pesakim 82; ibid. 178.
Teshuvot Maharam
A. A's sons must pay their three sisters three quarters of the designated sum, and may keep the other quarter for themselves, even if the deceased daughter left heirs. The death of one daughter does not annul the gift to the other three.
SOURCES: Cr. 189; Pr. 136; L. 387; Mord. Git. 431.
Teshuvot Maharam
A. A's sons must pay their three sisters three quarters of the designated sum, and may keep the other quarter for themselves, even if the deceased daughter left heirs. The death of one daughter does not annul the gift to the other three.
SOURCES: Cr. 189; Pr. 136; L. 387; Mord. Git. 431.
Teshuvot Maharam
A. The widow owes nothing to her son.
SOURCES: Pr. 860.