Rauner 003203 Folio 008v Chant 2 Dum steteritis
"Dum steteritis," the third responsory from the first nocturn of Matins, Common of Apostles
Dum steteritis ante reges et presides nolite cogitare quomodo aut quid loquamini | Dabitur enim vobis in illa hora quid loquamini