17:26
सद्भावे साधुभावे च सदित्येतत्प्रयुज्यते ।
प्रशस्ते कर्मणि तथा सच्छब्दः पार्थ युज्यते ॥१७- २६॥
sadbhaawe saadhubhaawe cha sadityetatprayujyate ।
prashaste karmaNi tathaa sachChabdaH paartha yujyate ॥१७- २६॥
Source: Automatic ITRANS Transliteration
In truth and in goodness "sat" is the one that suits.
In auspicious acts, the word "sat" suits there, O Partha.
Source: Milind S. Pandit
SAT is used in the sense of reality and goodness. The word "SAT" is also used for an auspicious act, O Arjuna.