Is one a heretic if he does not believe in Kabbalah? Not necessarily that the Rashbi authored the Zohar, but in the general tenets of kabbalah including but not limited to: tzimtzum, sefirot, ...
As discussed in this question and the comments there, we know, based on Beitza 4b, that there is some halachically binding concept of minhag avoseinu b'yadeinu (the custom of our forbears is in our ...
If an Ashkenazi Sofer writes a Sefer Torah in the Sephardi or Yemenite tradition: a) has he fulfilled his obligation of writing a Sefer Torah (thanks, Double AA!), and b) since a Sefer Torah must be ...
Is this fish Kosher? It apparently has both fins and scales. Is there any problem with its having teeth, or its not having been discovered until now (and therefore being outside of our Mesorah)?
There is an argument between texts if the word "Petzua Daka" (Devarim 23:2) should be with an Alef or a Heih. Can someone fulfill his obligation to read Zachor (and normal Torah reading) with a Torah ...