The received East Syriac text has no institution narrative, and the Holy See judged eucharists celebrated with it valid in 2001 on the ground that the words are present in the prayer in a dispersed form. Whether the narrative was omitted, was lost in transmission, or was never there is argued from the manuscript tradition and from the structure of the prayer, and this run could not establish which reading holds the field.
What would resolve this A study of the earliest East Syriac manuscript witnesses and their variants, set against the structure of the related Syriac anaphoras, together with the responses published by liturgical scholars to the 2001 guidelines.
OpenLiturgical history; Syriac manuscript studiesDivinity Atlas Open Questions Register, First Edition