Dharmo Rakshati Rakshitah
Dharmo Rakshati Rakshitah (; IAST: dharmo rakṣati rakṣitaḥ) is a popular Sanskrit phrase mentioned in Mahabharata and Manusmriti verse 8.15. It can be loosely translated as "The Dharma protects those who protect it". The closest synonyms for Dharma in English are righteousness and ethics. The phrase is part of a full Manusmriti verse that says:

Manusmriti was first translated by Sir William Jones in 1776 for making legal provisions for Hindus in British India including other Sanskrit religious books. This phrase is also found in Mahabharata. It is mentioned three times. In the Vana Parva (Araneya Parvadhyay) Yudhisthira said to Yaksha - 

 
This translation is from M. N. Dutt's Mahabharata. In that book, this verse is found in 3.312.128. A slightly different verse is mentioned in the Anushasana Parva. It is also mentioned in Mahabharata 3.30.8 Gita Press, Hindi Translation. It is the motto of the Research and Analysis Wing and National Law School of India University. 