Midras

a pure object can be considered Midras to a person engaged in a higher level of purity

anything not safeguarded for holiness is considered Midras

mishnah Midrash halachos aggadah either set up by Rabbi Akiva or the men of the great assembly, Rabbi Akiva set up generalizations and specifications

one who carries a Midras object may also carry terumah, but not kodesh

tefillin, pressed clothing, covering face, eating at a different house the yours, washing, wearing shoes, cutting hair, doing laundry, reading Torah, Midrash, halachah, aggadah, greeting people, working