"A previously married woman should not be married until her permission has been sought, and a virgin should not be married until her consent is sought." They said: "O Messenger of Allah, how does she give her permission?" He said: "Her permission is if she keeps silent." (Using translation from Nasāʾī 3265)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «لَا تُنْكَحُ الثَّيِّبُ حَتَّى تُسْتَأْذَنَ وَلَا تُنْكَحُ الْبِكْرُ حَتَّى تُسْتَأْمَرَ» قَالُوا يَا رَسُولَ اللهِ كَيْفَ إِذْنُهَا؟ قَالَ «إِذْنُهَا أَنْ تَسْكُتَ»  

[Machine] A man married off his daughter while she was unwilling. So she went to the Prophet ﷺ and said, "Indeed, my father has married me off to a man while I am unwilling, and my cousin has proposed to me." He said, "There is no marriage for him, marry whomever you wish."  

أَنَّ رَجُلًا زَوَّجَ ابْنَةً لَهُ وَهِيَ كَارِهَةٌ فَأَتَتِ النَّبِيَّ ﷺ فَقَالَتْ إِنَّ وَذَكَرَ كَلِمَةً مَعْنَاهَا أَبِي زَوَّجَنِي رَجُلًا وَأَنَا كَارِهَةٌ وَقَدْ خَطَبَنِي ابْنُ عَمٍّ لِي فَقَالَ «لَا نِكَاحَ لَهُ انْكِحِي مَنْ شِئْتِ»