Forbidden speech on Shabbos

Speaking of forbidden matters on Shabbos:

Those matters which are forbidden to do on Shabbos, whether Biblically or Rabbinically, are forbidden for one to speak about doing them after Shabbos.[1]

 

One may not say:

• Tomorrow I am traveling tomorrow to this and this city.[2]
• Tomorrow I will cook this and this food.
• I am going to sleep today on Shabbos so I have strength to do Melacha at night after Shabbos.[3] [One may not even say that he is going to sleep so he has strength to write words of Torah after Shabbos.[4] However one may say that he is going to sleep for the sake of having strength to be awake and learn Torah.[5]]

 

When Erev Shavuos falls on Shabbos, may one sleep on Shabbos for the sake of being up on Shavuos night?[6]

It is permitted to go to sleep on Shabbos for the sake of being awake on the night of Shavuos. One may even say that he is going to sleep for the sake of having strength to be awake and learn Torah.[7] One however may not say “I am going to sleep today on Shabbos so I have strength to do Melach, such as cooking, after Shabbos”.[8]

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[1] 307/1

This applies even if speaking about doing these actions gives one no benefit in helping him accomplish them. When speaking of forbidden matters helps one prepare to do them after Shabbos, such as asking a friend if he is will to drive him somewhere, then in addition to the speech prohibition, one also violates the Mimtzo Cheftzacha prohibition. [ibid]

[2] 307/15 As the term travel describes entering into a forbidden form of transportation, such as a car or air plane which is forbidden to do on Shabbos in all cases. [ibid]

[3] Admur 290/6; M”A 290/; 307/1; Sefer Chassidim 266; M”B 290/4

[4] Shaareiy Teshuvah 290

[5] Implication of Poskim ibid that write it is only forbidden to say “Melacha” and “writing words of Torah”. This follows the rule that the prohibition of Vedaber Davar only applies towards matters that are forbidden to do on Shabbos, and hence since it is permitted to learn or stay awake after Shabbos, therefore there is no prohibition involved in saying it.

Other opinions: Some write it is forbidden to even say “I am going to sleep so I have strength to learn after Shabbos” due to Mimtzo Cheftzecha, as one is revealing that his sleep is in preparation for after Shabbos. [SSH”K 28/72 footnote 168; see also Admur 404/4] Others learn it is forbidden to say this due to it being a belittlement of Shabbos. [Piskeiy Teshuvos 290/4 based on Elya Raba 307/1; P”M 290 M”Z] Practically this opinion is negated in the wording of the above Poskim.

[6] See Admur 290/6

[7] Implication of Poskim ibid that write it is only forbidden to say “Melacha” and “writing words of Torah”. This follows the rule that the prohibition of Vedaber Davar only applies towards matters that are forbidden to do on Shabbos, and hence since it is permitted to learn or stay awake after Shabbos, therefore there is no prohibition involved in saying it.

Other opinions: Some write it is forbidden to even say “I am going to sleep so I have strength to learn after Shabbos” due to Mimtzo Cheftzecha, as one is revealing that his sleep is in preparation for after Shabbos. [SSH”K 28/72 footnote 168; see also Admur 404/4] Others learn it is forbidden to say this due to it being a belittlement of Shabbos. [Piskeiy Teshuvos 290/4 based on Elya Raba 307/1; P”M 290 M”Z] Practically this opinion is negated in the wording of the above Poskim.

[8] Admur 290/6; M”A 290/; 307/1; Sefer Chassidim 266; M”B 290/4