Parashas Shemos · Passuk 5:20
Chabad.org — English translation + Rashi
Torah Temimah points to Nedarim 64b (verified).
Sefaria — Exodus 5:20
Sefaria — Nedarim 64b
E-Daf — Nedarim 64b
English: “Rabbi Yochanan said in the name of Rabbi Shimon ben Yochai: Wherever the Torah uses “nitzim” or “nitzavim” for these confrontational figures, it refers to Dathan and Abiram. Thus the men who stood to confront Moses and Aaron here were Dathan and Abiram.”
On the daf / in context: See the cited source for the full section.
Talmudic identification of Dathan and Abiram
Chazal identify the hostile men confronting Moses and Aaron as Dathan and Abiram, linking this encounter with their earlier confrontation with Moses.