俱舍論疏 13.73

13.73

論「若爾表業至便成大過」，有部難。能表示心名為表業，依其表業發無表業。二業唯是意思，思非是表，故無表業。既無表業，無表亦無，便成大過。

On the Śāstra's statement: "If so, then intimation karma [... to ...] becomes a great error": The Sarvāstivādins challenge. That which can indicate the mind is called intimation karma; relying on that intimation karma, non-intimation karma is produced. The two karmas are solely mental intention, and intention is not intimation; therefore there would be no intimation karma. Since there is no intimation karma, non-intimation would also not exist, which becomes a great error.