First Investment Property

[Kevin Nolan]

Hi everyone - I'm in the process of buying my first rental property (currently waiting on the appraisal), and I have a quick question if you all could help.. So regarding the down payment of, I have the funds myself but my father offered to help on the down payment in order to not sell off my portfolio in the stock market during this time. What I've been told is that I cannot do this since its an investment property, but my question is how will the lender know that the down payment is coming out of my account vs my fathers account? Do they check right before closing to make sure it came out of my account? This may be a dumb question but any help would be really great! 

Thanks!