Vakyapadiya 2.85

2.85

bhedenāṅgāṅgibhāvo 'sya bahubhedaṃ vikalpyate
idaṃ niyamyate 'syātra yogyatvam upajāyate //

Its relation of principal and subsidiary varies in multiple ways through division; / this is restricted; here, fitness arises for this;