Kommentar zu Niddah 6:10
Bartenura on Mishnah Niddah
ויש שטעון ברכה לפניו ואין טעון ברכה לאחריו – such as ritual fringes/Tzizit, and Tefillin/phylacteries and Mezuzah, Shofar, Sukkah and Lulav, that we recite a blessing upon them before doing/performing them, but they don’t require a blessing afterwards.
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English Explanation of Mishnah Niddah
Whatever requires a blessing after it requires one before it;
But there are things that require a blessing before them and not after them.
One must recite a blessing before eating anything, even of the smallest amount. One also must recite a blessing before the performance of a mitzvah. But in both of these cases, there is no blessing recited after.
However, anything that one blesses after it, such as a sufficient portion of food, one would certainly have to bless before it as well.
But there are things that require a blessing before them and not after them.
One must recite a blessing before eating anything, even of the smallest amount. One also must recite a blessing before the performance of a mitzvah. But in both of these cases, there is no blessing recited after.
However, anything that one blesses after it, such as a sufficient portion of food, one would certainly have to bless before it as well.
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