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According to Tibetan system of tenets, the Vaibhāṣikas so-called 'Hinayana school of tenets' defines an ultimte truth as:
A phenomenon such that an awareness apprehending it is not cancelled if it is broken up or mentally separated into its individual parts.
Illustrations of ultimate truths are:
directionally partless particles, temporally partless [moments of] consciousness, uncompounded phenomena, any of the five aggregates.
Mahayana tenets assert that Vaïbashikas do not posit selflessness of phenomena, but merely [a grosser] selflessness of persons. Jetsün Chökyi Gyaltsen writes:
A selflessness of phenomena is not accepted because it is accepted that if it is an established base it is necessarily a self of phenomena.