English: “As He had said.” Rava said to Rabbah bar Mari: From where is the matter that the Sages said, “Whoever seeks mercy for his fellow when he himself needs that same thing is answered first”? As it is written, “And Avraham prayed [for Avimelech],” and immediately afterward, “And Hashem visited Sarah as He had said”—as Avraham had said concerning Avimelech.
On the daf / in context: Avraham’s prayer for Avimelech’s household is immediately followed by Sarah’s own visitation, proving the principle that one who prays for another in need is answered first for himself.
Type of Learning
Derash on the verse (Bavli sugya) — not a formal named middah of the 13. Narrative sequence yields a rule of intercessory prayer.
What Is Learned
One who prays for his fellow when he himself needs the same thing is answered first; Avraham prayed for Avimelech and was immediately answered for Sarah.