AHMAD 20206:
from Samurah —
[Machine] The Messenger of Allah ﷺ said, "When two guardians marry (a girl) off, it is up to the first one, and if a sale is made by two men, it is up to the first one of them."
أحمد ٢٠٢٠٦:
عن سمره —
أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِذَا أَنْكَحَ الْوَلِيَّانِ فَهُوَ لِلْأَوَّلِ مِنْهُمَا وَإِذَا بَاعَ بَيْعًا لِرَجُلَيْنِ فَهُوَ لِلْأَوَّلِ مِنْهُمَا