Buddha-carita, or Life of Buddha by Ven. Aśvaghoṣa

Buddha-carita, or Life of Buddha - 195
75. On another he performed the drying, and another he flung up into
the sky; the stone as it flew up reached the blazing city and astonished
all the worlds.
76. After paying their worship in many ways, Trapusha and Bhallika
duly raised an excellent Caitya and they called it Silāgarbha.
77. The ascetics of that neighbourhood paid their homage to the
‘Three Stones’ when they were made into a Caitya, and the noble
stream flowed widely known as the ‘Holy River.’
78. Those who bathe and offer their worship in the holy river and
reverence the Caitya of the three stones, become great-souled
Bodhisattvas and obtain Nirvāṇa.
79. Then seated under a palm-tree the holy one pondered: ‘The
profound wisdom so hard to be understood is now known by me.
80. ‘These sin-defiled worlds understand not this most excellent (Law),
and the unenlightened shamelessly censure both me and my wisdom.
81. ‘Shall I proclaim the Law? It is only produced by knowledge;
having attained it thus in my lonely pondering, do I feel strong
enough to deliver the world?’
82. Having remembered all that he had heard before, he again
pondered; and resolving, ‘I will explain it for the sake of delivering
the world,’