Any deposit into your bank account is PRESUMPTIVELY (legal term of art meaning they assume this is the case) income. You can REBUT that presumption by claiming:
In your situation, the cash is income since it didn't fit any of the scenarios above. The good news is that it is offset by the fact that you SPENT it (ie., expense).
Disclaimer: This post is just for discussion purposes only. Consult with a qualified attorney in your jurisdiction.