Parashas Bo · Passuk 12:2
Chabad.org — English translation + Rashi
Torah Temimah points to Rosh Hashanah 7a (verified).
Sefaria — Exodus 12:2
Sefaria — Rosh Hashanah 7a
E-Daf — Rosh Hashanah 7a
English: Rabbi Asi said in the name of Rabbi Yochanan: Whoever blesses the new month in its time is as if he receives the face of the Shechinah. It is written here “this month” and there “this is my God and I will glorify Him.”
On the daf / in context: See the cited source for the full section.
Gezeirah shavah (zeh–zeh) — middah of R’ Yishmael’s 13.
Blessing the new moon in its time is comparable to receiving the Shechinah.