 In the 8th century, the development of monastic liturgical practice was centered in the Monastery of the Stoudios in Constantinople where the services were further sophisticated, in particular with regard to Lenten and Paschal services and, most importantly, the Sabbaite Typikon was imported and melded with the existing typikon; as Fr.Robert F. Taft noted,

How the cathedral and monastic traditions meld into one is the history of the present Byzantine Rite.... [St. Theodore the Studite] summoned to the capital some monks of St. Sabas to help combat iconoclasm, for in the Sabaitic chants Theodore discerned a sure guide of orthodoxy, he writes to Patriarch Thomas of Jerusalem.