Sikong Benjing 司空本浄 (667-761), the Sixth Patriarch Huineng's dharma heir, is quoted as follows in the Record of the Transmission of the Lamp 《景德傳燈錄》.
The Master then explained the verse of no practice and no action. “Seeing the path and then practising the path: if you don't see it, again how do you practice it? The nature of the path is like empty space: in empty space what is practised? Fully watch the one who practices the path: they stir the fire seeking floating bubbles. Just watch the manipulation of the puppet: the strings cut and simultaneously it stops.”
1Fukushū Tōzen-ji Ban Keitoku Dentō Roku福州東禪寺版景德傳燈錄, (Kyoto: Zen Bunka Kenkyūjo, 1990).