Note 5 — Chapter XXXIX · CREMATION OF AN ARHAT. SERMON OF A DEVOTEE.
James Legge translation
This king must have been Mahâ-nâna (A.D. 410–432). In the time of his predecessor, Upatissa (A.D. 368–410), the piṭakas were first translated into Singhalese. Under Mahâ-nâna, Buddhaghosha wrote his commentaries. Both were great builders of vihâras. See the Mahâvaṉśa, pp. 247, foll.