俱舍論記 20.57

20.57

「若體全無至應是所緣」者，說一切有部難。汝經部師若體全無是所緣者，第十三處應是所緣。

"If non-existence [itself] were an objective condition, then a thirteenth āyatana should be an objective condition": this is an objection raised by the Sarvāstivāda. "If, as you Sautrāntikas hold, that which is completely non-existent can be an objective condition, then a thirteenth āyatana ought to be an objective condition."