Chabad.org — English translation + Rashi
Torah Temimah points to Shabbos 70b.
E-Daf.com — Shabbos 70b
HebrewBooks / Shas PDF
English: “From one of them” — to include derivatives [of the primary labors].
Ribbuy of toldos — chatas liability extends to both primary prohibited labors and their derivatives.
Chatas liability extends to both primary prohibited labors and their derivatives. The phrase “from one of them” is read as encompassing not only the thirty-nine primary categories of labor but also the toldot that derive from them. An unwitting violation of a toldah therefore obligates a chatas in the same way as a violation of an av melakhah.