1) A table leaf may be added to or removed from a table on Shabbos to extend or decrease the size of the table, even if the pins in the leaf are inserted into the corresponding holes in the table and there is no concern of Boneh, as this leaf is meant to go in and out and is also considered loosely attached.
There is also no concern of making an ohel on Shabbos, as this is adding on to an Ohel and not initially making one as we shall discuss when we learn the Halachos of Ohel B'Ezras Hashem. (See Shmiras Shabbos K'Hilchaso Perek 24:23)
Of course, the leaf may not be screwed into the table on Shabbos.
2) It is permitted to open and close a folding table, folding chair, folding bed, child's playpen and similar items and this is not considered Boneh as all the parts are already connected to each other and thus not considered being assembled on Shabbos. (ibid.)
QUESTION & ANSWER CORNER
Reader Submitted Questions of interest on topics related to Halachos we covered, as well as other interesting topic and Answers.
These Q&A are taken from the Q & A pages on the Halacha For Today website.
Although the answers I give to questions are taken directly from the Sifrei HaPoskim, and aren't my own, they are still for study purposes only, NOT for Psak Halacha.
Questions can be emailed to HalachaForToday@Gmail.com
Reader's Question:
Why do we remove our Tefiling on Rosh Chodesh before Musaf?
Answer:
In many congregations (Nusach sefard) the Kedusha that is said in Mussaf of Rosh Chodesh begins with "Keser Yitnu Lecha Hashem Elokeinu- We crown You Hashem our G-d".
Thus it is not proper to be wearing our crown (i.e.Tefilin) while we are proclaiming the crowning of Hashem. (See Mishna Berura Siman 25:61)
CHIZUK CORNER
This section is dedicated L'Ilui Nishmos the Telzer Rosh Yeshiva, HaRav Chaim Yaakov Stein Zatzal and the Mir Rosh Yeshiva, HaRav Noson Tzvi Finkel Zatzal. May we all strive to follow in their ways and may they both be Melitzei Yosher for all of Klal Yisroel.
We will B'Ezras Hashem post here each day a short inspirational thought to help us all improve our lives and grow in our service of our Father in heaven, HaKadosh Baruch Hu.
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THANK YOU AND תזכו למצות!
זכר צדיקים וקדושים לברכה
All happiness is saddened by the prospect of old age and death; but that is only for the materialist whose end is the grave.
When one lives for eternity, every moment of true joy in this life is a precious jewel whose brilliance shall never fade.
Rav Avigdor Miller Zatzal in his book "Rejoice, O Youth" ; Taken from www.SimchasHachaim.com