仁王般若經疏 1.130

1.130

「何以故？十地三十生空故，始生、住生、終生不可得，地地中三生空故，亦非薩婆若、非摩訶衍空故。」

"Why is this? Because the daśabhūmi and the thirty births are empty: beginning birth, abiding birth, and final birth cannot be apprehended; because the three births in each and every bhūmi are empty, and also because it is not sarvajñā, not Mahāyāna, [being] empty."