Hours of the Virgin of Metz, Saint-Arnould O.S.B. - Matins - Lesson I - O beata Maria, quis tibi digne ualeat iura gratiarum et laudum preconia impendere, que singulari tuo | HORAE | Fulberti Carnotensis episcopi, Sermo IX (PL 141, 338 c d) | Lesson | h800