大乘入道次第開決 1.64

1.64

自性即是我法等性者。等即等取但隨言說依假名言所立性者。即如龜毛兔角空花毛輪二月皆此所等。

As for "intrinsic nature means the nature of self, phenomena, etc.": "etc." encompasses the natures established merely in accordance with conventional discourse, relying on nominal designations—namely, turtle hair, rabbit horns, flowers in the sky, a wheel of hairs, and a double moon; all are what is included by this "etc."