維摩經略疏垂裕記 7.41

7.41

問：既云法身，今那云應？答：無色曰法，聲即是應，應即法身，何求異耶？故云吾今此身即法身也。《法華》空聲準應可見。

Question: Since it is called the dharmakāya, how can you now call it the response? Answer: Being formless is called dharma; the sound is the response; the response is itself the dharmakāya—why seek any difference? Therefore it is said: 'My present body is precisely the dharmakāya.' The voice in the air in the Lotus Sūtra may be understood by analogy.