وَإِذَا أَوْجَبَ أَحَدُ الْمُتَعَاقِدَيْنِ الْبَيْعَ فَالْآخَرُ بِالْخِيَارِ: إِنْ شَاءَ قَبِلَ فِي الْمَجْلِسِ وَإِنْ شَاءَ رَدَّهُ.
Translation: When one contracting party makes an offer, the other may accept it within the session or reject it.
A unilateral offer does not force the other party into a purchase. Until acceptance, the offeree retains the option to accept or reject.
If a shopkeeper offers a particular pen for 100 rupees, the customer may consider the proposal. Simply hearing it does not impose a duty to pay or buy.