English: Whoever begins a mitzvah and does not complete it, and another comes and completes it — he buries his wife and his children.
On the daf / in context: Torah Temimah continues the incomplete-mitzvah theme of “Yehudah went down from his brothers” into the domestic cost of leaving a mitzvah unfinished.
Type of Learning
Derash on the verse (Bavli sugya) — not a formal named middah of the 13. Narrative descent is paired with a general rule about unfinished mitzvos.
What Is Learned
Leaving a mitzvah incomplete so that another must finish it is associated with the loss of wife and children.