English: It is written “elai” [unto me]; Eliezer had a daughter, and he was looking for a pretext that Avraham would turn to him to marry her to Yitzchak.
On the daf / in context: The defective spelling allows reading “ulai” as “elai”: Eliezer had hoped the mission might fail so that his own daughter might be considered.
Type of Learning
Derash on the verse (Rashi / midrashic spelling) — not a formal named middah of the 13: the missing letter is taken as a hint of Eliezer’s private hope.
What Is Learned
The word “ulai” is written so that it can be read “elai”; Eliezer had a daughter and hoped the mission might turn toward him.