What should be if he did what is mentioned in this verse?
Rashi: He accepts the curse in the coming verse - "Ezre'ah..."
Malbim (8): Then, what happened to me (loss of property and children) was justified.
What is the significance of the matters in this verse?
Malbim: It is what my friends say - I veered from the proper path, and my heart was drawn after my eyes to covet, and via this [unjust gain] stuck to my hands.
What is "Mum"?
Rashi: It is a Mum (blemish). It is written with an Aleph, but it is not pronounced, like "Lo Sosifun."
Ibn Ezra: It is like Me'umah (anything). Mesilas Yesharim Perek 11 - he compares covert theft to something stuck to man's hand. Even if he does not go l'Chatchilah to take it, it is Davak (sticks) by itself.
