Narrated Abu Burda bin Abu Musa on the authority of his father; Allah's Messenger (ﷺ) said: "There is no marriage without a guardian." [Ahmad and al-Arba'a reported it. Ibn al-Madini, at-Tirmidhi and Ibn Hibban graded it Sahih (authentic), but it was regarded defective for being Mursal (missing link after the Tabi'i)].