بُلُوغُ الْمَرَامِ
Bulugh al-Maram 984
Marriage
وَعَنْ أَبِي هُرَيْرَةَ - رضى الله عنه - أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ : { لَا تُنْكَحُ اَلْأَيِّمُ حَتَّى تُسْتَأْمَرَ, وَلَا تُنْكَحُ اَلْبِكْرُ حَتَّى تُسْـتَأْذَنَ قَالُوا : يَا رَسُولَ اَللَّهِ , وَكَيْفَ إِذْنُهَا ? قَالَ : أَنْ تَسْكُتَ } مُتَّفَقٌ عَلَيْهِ [1] .
Narrated Abu Hurairah (RA): Allah's Messenger (ﷺ) said: "A previously married woman must not be married till she is consulted, and a virgin must not be married till her consent is asked." They asked, "O Allah's Messenger (ﷺ) , how is her consent indicated?" He replied, "It is by her silence." [Agreed upon].
Sunnah.com reference: Book 8, Hadith 18