In the 11th chapter of the Lotus Sutra, Prabhūtaratna is described as living in a land "tens of millions of billions of countless worlds to the east" called "Treasure Purity.". Here he resides within a stupa translated variously as the "Precious Stupa," the "Treasure Tower," the "Jeweled Stupa," or the "Stupa of the Precious Seven Materials." Prabhūtaratna is said to have made a vow to make an appearance to verify the truth of the Lotus Sutra whenever it is preached in the present or future. In the chapter, as Shakyamuni is preaching, Prabhūtaratna's stupa arises from under the earth and hangs in midair. It is of unimaginable height and length. Traditionally
stupas were edifices where relics of Buddhas are stored. Those gathered to hear Shakyamuni preach at
Vulture Peak assumed the stupa from below the earth would contain relics. Instead, it contained within a living Prabhūtaratna who verified the truth of the teaching. "Great-Eloquence Bodhisattva" wants to see the Buddha in the stupa but Prabhūtaratna's vow makes it a prerequisite for showing his body that the Buddha who proclaims the Lotus teaching collects all his manifestations. At this point Shakyamuni summons from around the universe countless Buddhas who are his emanations, lifts the entire assembly into the air, and opens the stupa. Prabhūtaratna praises Shakyamuni and invites him to sit next to him. Shakyamuni then continues to preach the
Dharma. In the 22nd "Entrustment" chapter of the Lotus Sutra, Prabhūtaratna and his stupa return to under the earth. == Interpretations ==