Anattalakkhaṇasutta

Vinayapiṭaka · Mahāvagga (1) · Vol. 4 · Section 46

[46] Now at that time those matted-hair ascetics (jaṭilā), wishing to tend their sacred fires, were unable to split the firewood. Then it occurred to those matted-hair ascetics: "Doubtless this is the power of psychic potency (iddhānubhāva) of the Great Ascetic, in that we are unable to split the firewood." Then the Blessed One said to Uruvelakassapa the matted-hair ascetic: "Let the firewood be split, Kassapa." "Let it be split, Great Ascetic." All at once, five hundred pieces of firewood were split. Then it occurred to Uruvelakassapa the matted-hair ascetic: "Truly the Great Ascetic is of great psychic power, of great might, in that even the firewood will be split — but he is certainly not an arahant (arahā) as I am."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.