瑜伽論記 2.150

2.150

'Always, at all times, and constantly, at every time' means that from the past extremity onward, the nature of the effect always exists in the cause, hence 'always, at all times'; going toward the future extremity, it also constantly exists, hence 'constantly, at every time.' As for 'the Rain-Crowd (Varṣagaṇya) outsiders,' it refers to the eighteen school masters, the senior disciples of the Sāṃkhya master; because [their teacher] was born during the rainy season he was called 'Rain,' and his followers were called 'the Crowd.'