सद्भावे साधुभावे च सदित्येतत्प्रयुज्यते। प्रशस्ते कर्मणि तथा सच्छब्दः पार्थ युज्यते॥
sadbhāve sādhubhāve ca sadityetatprayujyate praśaste karmaṇi tathā sacchabdaḥ pārtha yujyate
Meaning
Sat' means Reality or the highest Good, and also, O Arjuna, it is used to denote an action of exceptional merit.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha