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Chazan Mistakenly Started Kaddish

Chazan Mistakenly Started Kaddish


What is the din if the Chazan erroneously assumes tachanun is omitted and starts saying Kaddish when in reality tachanun is to be said.

If he started – does one interrupt a started Kaddish?
Is there a point in which one does not interrupt it anymore but he continues and finishes Kaddish
If yes, is one `mashlim` tachanun later or is tachanun lost?
And if one is mashlim, at which point in davening should one add it?

Many thanks for clarifying this matter which does not seem to be discussed in the poskim.


Once kaddish is begun it should not be stopped, rather completed. According to most authorities tachanun should be said after the kaddish. This was the opinion of Rav Shlomo Zalman Auerbach, brought in Sefer Halichos Shlomo. He writes there that one should say at whatever point he remembers and has a chance to say it, even if he is already at home.

There is a dispute if another kaddish should be said after tachnun is said or Ashrei should be started immediately, see Lhoros Nassan Vol. 6 Siman 7.

Rav Chaim Kanievsky has said over in the name of the Chazon Ish that once kaddish is started, even the first word, it should be continued and tachnun should not be said afterwards, rather it is lost. See Sefer Ishei Yisrael pg. 271 footnote 1, pg. 293, footnote 17, Orchos Rabeinu Vol. 3 pg. 225.

Common practice seems to follow an in between approach. Tachanun is made up if mistakenly skipped, but only during davening. Once one has finished davening and already home it would not be made up.

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