Q: A. What is the original source of “Eilu Devarim SheAdam Ochel PeiroseiheM BaOlam Haze…” followed by a list of 10+* items that is recited after Birchat HaTorah found in Ashkenazik** siddurim?
– We know it’s not the end/seifa of the 1st mishna in P’ea which lists only 4 items
– We know it’s not the saying/memra of Rabbi Yochanan in Shabbos 127a which specifies 6 items (incl. Megadel Banim LeT”T & Dan Chaveiro LeKaf Zchus)
(The spelling of both above sources are “peiroiseiheN” with a Nun instead of Mem)
– I did not find it anywhere in the Tosefta P’ea either nor the Tur (Hil. Birkat Hatorah)
B…If the the siddur’s print is indeed a made-up concoction of the 4 items at end of the mishna in P’ea + 4 items (out of 6/Shabbos 127a) from R’ Yochanan + Hachnosas Kalla + Levayas HaMeis (I always thought Chesed shel Emes was not for reward in this world, but that’s a side question. *Some siddurim add …”Bein Ish LeIshto” to “ahavas shalom”, others add “v’Ahavas HaBriyos”, etc.)…
…wouldn’t it be better to recite an authentic text in its originality from the Mishna & Gemara (in accordance with M.B. Siman 57:9 s.k. 20) to properly fulfill learning of Mikra+Mishna+Talmud immediately after the blessings?
I.e: Recite the first mishna in P’ea in its entirety, followed by the original text in Shabbos 127a: “Amar R’Yochanan shisha devarim adam ochel peiroiseihen”…etc.
**I saw that other siddurim like Nusach Teiman, after the verses of Birkat kohanim indeed have the entire above mishna, followed by an original saying from the gemara in Nidda 66a: “Amar R’ Zeira Bnos Yisrael”…etc.
A. Horav Shlomo Miller’s Shlit’a opinion is that there are several different girsaos or texts on the Talmud Shabbos, and this may be one of them.
Please see https://www.ou.org/torah/tefillah/tefillah-on-ou/eilu-devarim-part-i-the-mishna-in-peah/
for a very comprehensive and lengthy explanation and answer to your question.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a