The reading Yhfrʿ is not sure. It may be also read Yfrʿ. The patronymic Mʿkl is also problematic as its completeness is not sure.
2
Solá Solé: s²ʿ]b-hw; according to the Glaser's copy, the ʿ in the first word is readable in part. The restitution proposed by Solá-Solé is certain. The name of tribe Yhybb is already known. The last word is more problematic, it may be a toponym introduced by the preposition b-.
Solá Solé, Josep M. 1964. Inschriften aus Riyām. Sammlung Eduard Glaser. 4. (Sitzungsberichte der Österreichische Akademie der Wissenschaften. Philosophisch-historische Klasse, 243/4). Vienna: Böhlaus.