English: “I have not eaten of it in my mourning” — from here they said: there is no aninut with respect to maaser. “Nor have I removed any of it while impure” — whether I am impure and the maaser is pure, or I am pure and the maaser is impure.
In Sifrei / related: The two clauses of the confession are turned into concrete prohibitions that define the conditions under which the produce may not be eaten or cleared out.
Type of Learning
Custom (phrase-by-phrase or midrashic expansion of the verse).
What Is Learned
The midrash extracts concrete legal, historical or theological referents from the wording of the passuk, giving the brief biblical language a fuller operational meaning.