दिवसानुवृत्तो नित्यः ॥ कZ_०२.६.२४ ॥
divasānuvṛtto nityaḥ
ਜੋ ਦਿਨੋਂ-ਦਿਨ ਚੱਲਦਾ ਰਹੇ, ਉਹੀ ਨਿੱਤ (ਆਵਰਤੀ) ਆਮਦਨ ਹੈ।
It provides a simple operational test for classifying receipts as routine cashflow versus periodic or exceptional receipts.