ABUDAWUD 2079:
from Ibn ʿUmar —
Ibn ‘Umar reported the Prophet ﷺ as saying “If a slave marries without the permission of his master, his marriage is null and void. Abu Dawud said “This tradition is weak. This is mauquf(does not go back to the Prophet). This is the statement of the Ibn ‘Umar himself.
أبو داود ٢٠٧٩:
عن ابن عمر —
أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا نَكَحَ الْعَبْدُ بِغَيْرِ إِذْنِ مَوْلاَهُ فَنِكَاحُهُ بَاطِلٌ