(a) No retail licensee may purchase wine or spirits from, or possess wine or spirits purchased from, any person other than a distributor or importing distributor; however, a retail licensee that purchases wine or spirits from a licensed Illinois retailer shall only receive a warning for the first 2 violations of this Section within a 12-month period. If a retail licensee violates this Section a third time within the same 12-month period of the preceding 2 warnings, then the retailer licensee may be subject to the penalties under Section 10-1.
     (b) A retailer that is delinquent in payment pursuant to Section 6-5 shall be prohibited from purchasing wine or spirits from another retailer pursuant to this Section until the indebtedness is cured.