Astanga Hrudaya
ओजस्तु तेजो धातूनां शुक्रान्तानां परं स्मृतम्। हृदयस्थमपि व्यापि देहस्थितिनिबन्धनम्॥३७॥
Ojas – the essence of Dhatus :- Ojas is the essence of the Dhatus; It is mainly located in the heart. It is present all over the body and regulates health.
english translation