Medical Loss Ratio Rebate for Sole Proprietor

Received a Medical Loss Ratio Rebate check on September 2, 2022 from Healthkeepers, Inc for 2021.  I file as a sole proprietor and claimed the health insurance payments as a business deduction for 2021.  How do I enter this rebate on my 2022 tax return, as personal or business income?  And where do I enter it?