Unique request from my tenant to loan security deposit

[Mushtaq G.]

Hi Experts,

Need your assistance, I have a very good tenant (senior couple), the guy went through some medical condition and he called me to check if I can loan half of security deposit to him just to cover expenses this upcoming month ( Jan'19), he said the rent is on auto-payment and I'll get complete rent but he wanted to see if I can give him half of security deposit to cover his expenses, I never dealt with this before and wanted to see the best way I can help my tenant here.  I dont think there are any forms available online for handling such query and I just dont want to write a check without some paper work to back me up just in case.

Appreciate your help!!