ويقال للبائع اقطعها وسلم المبيع
Translation: The seller is told: cut it off and hand over the thing sold.
In iqtaʿha, “it” refers to the fruit retained by the seller. Sallim al-mabiʿ means deliver the property sold to its buyer.
The ruling goes beyond identifying who owns the fruit: the seller is directed to clear the buyer’s property of the retained fruit and hand it over.