Appraisal question/closing costs

[Derek McGillicuddy]

Looking for some advice or just answers . Selling a property and buyer is asking for seller to pay closing costs. Does a FHA loan require sellers to pay closing costs?After agreeing on a price if the appraisal comes in low does the seller still have to pay closing costs due to the purchase and sales agreement or is all that void and you start renegotiation due to the bank not loaning the buyer $$ due to failure of appraisal?