Chabad.org — English translation + Rashi
Torah Temimah points to Shabbos 93a (unit 2; single primary locus per emergency Core plan).
E-Daf.com — Shabbos 93a
HebrewBooks / Shas PDF
English: “One soul shall sin” — three expressions of individuality are written here.
Multiple miyutim of group action — repeated singular language excludes cases where several people jointly perform a single prohibited act.
The verse’s insistence on singular language (“one soul,” “in doing it,” etc.) teaches that liability for a private chatas arises only when a single person performs the complete prohibited act. When the act is divided among several participants, the individual chatas obligation does not attach.