說無垢稱經疏 4.488

4.488

贊曰：三答也。空理義云：以勝義諦空無所有，佛土便空，故言以空空。應理義云：以空無彼遍計所執，方能顯於法報佛土。法報佛土由此稱空名空，非空無空。

Commentary: This is the third answer. The meaning of the Śūnyatā principle states: because according to ultimate truth there is nothing at all, the Buddha-lands are empty; hence it says 'empty through emptiness'. The meaning of the Yukti principle states: because they are empty of the parikalpita [nature], only then can the dharmakāya and saṃbhogakāya Buddha-lands be revealed. The dharmakāya and saṃbhogakāya Buddha-lands are therefore called empty and designated empty; it does not mean there is no emptiness at all.