Seasoning rules on non-financed properties - Why ?

[Bill Florence]

So I purchase properties for cash. I call my lender and ask to do cash out financing - no problem, lots of products available. But then I am told I have to season for 6 months. I know about seasoning for financed properties (eg first mortgage) but never expected to hear I have to season non-financed properties. I ask why ? Lender answer - "I dunno just the rules". Whose rules ? Why ?