Wholeseller Purchase agreement with option for buyer to cancel

[Brown Kamarr]

Hey,

I'm fairly new to wholesaling and actively searching for a contract that will allow a buyer to back out of the contract without penalty, and would sincerely appreciate a copy of such contract.

To be specific a Purchase agreement contract that allows a buyer to cancel if need be, before a set amount of time.

On a side note: I know of Purchase agreement contracts but curious if I would need any other contracts when locking in a deal. What about when selling the contract to a buyer?

I'm Currently working with a possible deal now just need the proper tools to close it. 

Thanks in advance!