The Prophet ﷺ said, "A matron should not be given in marriage except after consulting her; and a virgin should not be given in marriage except after her permission." The people asked, "O Messenger of Allah ﷺ! How can we know her permission?" He said, "Her silence (indicates her permission). (Using translation from Bukhārī 5136)
عَنِ النَّبِيِّ ﷺ قَالَ لَا تُنْكَحُ الْأَيِّمُ حَتَّى تُسْتَأْمَرَ وَلَا تُنْكَحُ الْبِكْرُ حَتَّى تُسْتَأْذَنَ قِيلَ يَا رَسُولَ اللهِ وَكَيْفَ إِذْنُهَا؟ قَالَ أَنْ تَسْكُتَ