فثبت البيع بطريق الاقتضاء فثبت القبول كذلك
The implied sale is established through iqtiḍāʾ, and the requisite acceptance is treated accordingly.
Sale requires the relevant contractual elements, including acceptance. Where a sale is presupposed by iqtiḍāʾ to make the expressed transaction legally coherent, the issue of acceptance is analyzed as part of that implication.
Possession in a gift is different. Physical taking of possession is an external act and cannot automatically be treated as having occurred just because some legal wording implies a transfer.
The distinction shows that required textual supplementation does not magically bring every real-world act into existence. Legal implication and actual performance must be kept separate.