Narrated 'Amr bin Shu'aib on his father's authority from his grandfather:

Allah's Messenger (ﷺ) said: "If any woman marries for a dowry, a gift, or a promise before contracting the marriage, it belongs to her. As for whatever is fixed to her after contracting the marriage, it belongs to whomever it has been given. The most worthy gift a man is honored with is what he gets on account of (the marriage of) his daughter or sister." [Reported by Ahmad and al-Arba'a except at-Tirmidhi].

وَعَنْ عَمْرِو بْنِ شُعَيْبٍ , عَنْ أَبِيهِ , عَنْ جَدِّهِ قَالَ : قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ أَيُّمَا اِمْرَأَةٍ نَكَحَتْ عَلَى صَدَاقٍ , أَوْ حِبَاءٍ , أَوْ عِدَةٍ , قَبْلَ عِصْمَةِ اَلنِّكَاحِ , فَهُوَ لَهَا, وَمَا كَانَ بَعْدَ عِصْمَةِ اَلنِّكَاحِ , فَهُوَ لِمَنْ أُعْطِيَهُ, وَأَحَقُّ مَا أُكْرِمَ اَلرَّجُلُ عَلَيْهِ اِبْنَتُهُ , أَوْ أُخْتُهُ } رَوَاهُ أَحْمَدُ , وَالْأَرْبَعَةُ إِلَّا اَلتِّرْمِذِيَّ [1]‏ .‏