Stupa worship

Stupa worship as revealed in the Lotus Sutra is of three types. First, the believer is urged to build, and make offerings to, the relic stupa. Next, the building of relic stupas is forbidden, and people are exhorted to build caityas [stupas containing sutras]. Lastly, it speaks of the jeweled Stupa (ratna-stūpa) and the emanations of the Tathāgata, and the śarīra-stūpa of Prabhūtaratna Buddha. This implies that the sutra is made up of different groups of chapters, containing different views about Stupa worship.

Source elements of the Lotus Sutra, p 122-123