California Good Funds Law states (loosely) that the funds must be verified to be 'good'24 hours before proceeds can be dispersed.
The buyer, then, is required to have the funds at escrow 24 hours before recording. Because you have those funds released to you, you are responsible for the interest being paid on it from the day it is given to you.
You have the right to wait until Monday to fund the loan and record on Tuesday.
Some counties do allow funding and recording on the same day. Check with your county to see if that can occur.
It all depends on the term of the contract. If the buyer is receiving "seller's credit" (credit from the seller towards the buyer's closing cost) and if there is enough to cover the buyer's pro-rated items, such as mortgage interest then it is a possibility.
If you should have any further questions, I can be reached at firstname.lastname@example.org
Nelva - http://www.diversifiedmg.com