Power of Attorney Question

[Nik Corbaxhi]

Hello BP Community,

Not sure if this was covered somewhere else but here is a situation. 

A power of attorney is attempting to sell the condo for the principal (his mother). The mother was accepted in hospice care and he wants to close the transaction ASAP. Power of attorney ends with the death of the principal. If I enter into a real estate agreement with him to purchase the property, and then the principal dies mid-transaction, does the agreement still stand or is it voided? 

Any help would be greatly appreciated.