Ibrahim narrated from Alqamah (may Allah have mercy on him): "The one in whose hand is the marriage tie" [Surah al-Baqarah: 237] means the guardian. Qadi Shurayh (may Allah have mercy on him) said: It means the husband.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14458