俱舍論頌疏論本 29.65

29.65

又彼部法有五法藏：三世為三，無為為四，我為第五不可說藏。我在生死，不可說與三世為一為異；若入涅槃，不可說與無為亦為一為異，故立此我為不可說藏。破云：我與前四法藏若不可說為異故，即不應說為第五法藏。我與前四若不可說為一故，即不可說為非第五。非第五者，即是前四法藏。既第五、非第五俱不可說，但應建立前四法藏。

Furthermore, that school's teachings have five repositories of phenomena: the three times constitute three, the unconditioned constitutes the fourth, and the self is the fifth inexpressible repository. When the self is in saṃsāra, it is inexpressible whether it is identical to or different from the three times; when it enters nirvāṇa, it is also inexpressible whether it is identical to or different from the unconditioned; therefore, they establish this self as the inexpressible repository. Refuting this: 'If the self is inexpressible as being different from the preceding four repositories of phenomena, then it should not be stated to be the fifth repository of phenomena. If the self is inexpressible as being identical to the preceding four, then it cannot be stated to be not the fifth. That which is not the fifth is precisely the preceding four repositories of phenomena. Since both the fifth and what is not the fifth are inexpressible, one should only establish the preceding four repositories of phenomena.'