Note 4 — Chapter XXVIII · RAJAGRIHA, NEW AND OLD. LEGENDS AND INCIDENTS CONNECTED WITH IT.
James Legge translation
(4) Hardy (M. B., pp. 288, 289) makes the subjects only thirteen, which are still to be found in one of the Sûtras (“the Dik-Sanga, in the Sakra-prasna Sutra”). Whether it was Sakra who wrote his questions, or Buddha who wrote the answers, depends on the punctuation. It seems better to make Sakra the writer.