فَإِنَّ الْمَاءَ مَاءُ أَبِي وَجَدِّي
وَبِئْرِي ذُو حَفَرْتُ وَذُو طَوَيْتُ
Translation: This water belongs to my father and grandfather, and my well is the one I dug and lined.
This poetic evidence uses ذُو as a relative pronoun, not “owner of.”
Both «حَفَرْتُ» and «طَوَيْتُ» imply a deleted object referring to the well: effectively «حَفَرْتُهَا» and «طَوَيْتُهَا».