法華義疏 9.186

9.186

「有七寶塔」者，第三、列塔名字。所以明塔涌現者，凡有三義：一者、依《法華論》云「所以明塔者，示現如來舍利住持故」。二者、多寶誓願為證說不虛。三者、小乘之流謂佛畢竟無常，是故起塔。今塔涌現佛遂不滅，則知生滅是方便、不生滅為真實，為此因緣故明現塔；餘經但辨證說不虛，不欲開身權身實，故不以塔為證也。

"There was a seven-jeweled stūpa" is the third, listing the name of the stūpa. As for why the emerging and manifestation of the stūpa is explained, there are altogether three meanings: First, according to the Fahua lun, which says: "The reason the stūpa is explained is to manifest the abiding and preservation of the Tathāgata's relics." Second, Prabhūtaratna's vow was to verify that what was spoken is not false. Third, those of the Hīnayāna hold that the Buddha is ultimately impermanent, and therefore they erect stūpas. Now the stūpa emerges and manifests, yet the Buddha is consequently not extinct; then one knows that arising and ceasing are expedient means, while non-arising and non-ceasing are the real. For these causes and conditions the manifestation of the stūpa is explained; other sūtras merely distinguish the verification that what was spoken is not false, and do not intend to open the body's expedient and the body's real, so they do not take a stūpa as verification.