Source: PL-PŁsem MsEPl 12 Antyfonarz z Płocka, pars de sanctisFolio: 035vSequence: 7Feast: Cathedra PetriOffice: MGenre: VPosition: 01Cantus ID: 007678aMode: 7Full text: Quodcumque ligaveris super terram erit ligatum et in caelis et quodcumque solveris super terram erit solutum et in caelis