III 37.4-7
4.At another time a terrible famine spread everywhere and the church of Saint Laurentius the Martyr was burned by the Lombards. The man of God, desiring to repair it, hired many workers (subministrantes operarios). The labourers needed to be supplied without delay with daily provisions but, because of the said famine, bread was scarce. The workers started to urgently demand provisions, because they were not able to work due to destitution. Hearing that, the man of God comforted them with [soothing] words and promised [to supply them] with what was lacking. However, within himself he was deeply anxious, not knowing where to get the food he had promised.
5-7. Gregory narrates how Sanctulus was able to supply workers with bread by multiplying one loaf of bread he had miraculously found.
(trans. Gardner 1911: 167-168; changed and summarised by J. Szafranowski)