Sankhya Karika Verse 9
Sanskrit Verse
असदकरणादुपादानग्रहणात् सर्वसम्भवाभावात् । शक्तस्य शक्यकरणात् कारणभावाच्च सत्कार्यम् ॥९ ॥
Transliteration
asat-akaraṇāt-upādãna-grahaṇāt sarva-saṃbhavā-abhāvāt | śaktasya śakyakaraṇāt kāraṇa-bhāvāt-ca sat-kāryam ||
Translation
The effect is ever existent, because that which is non-existent, can by no means be brought into existence ; because effects take adequate material causes ; because all things are not produced from all causes ; because a competent cause can effect that only for which it is competent; and also because the effect possesses the nature of the cause
Reference: Sankhya Karika

Muni's Play