Source: PL-WRu I F 414 Cistercian Gradual (Silesia)Folio: 092rSequence: 6Feast: Inventio CrucisOffice: MASSGenre: OffCantus ID: g03393Mode: 1Full text: Verbum crucis pereuntibus stultitia est his autem qui salvi fiunt id est nobis virtus dei est alleluia