शमव्यायामौ योगक्षेमयोर्योनिः ॥ कZ_०६.२.०१ ॥
śamavyāyāmau yogakṣemayoryoniḥ
Restraint (śama) and exertion (vyāyāma) are the source of acquisition and security (yogakṣema).
Because acquisition needs proactive effort, while security and sustainability require restraint, control, and disciplined administration.