BG - 15.20

इति गुह्यतमं शास्त्रमिदमुक्तं मयाऽनघ।एतद्बुद्ध्वा बुद्धिमान्स्यात्कृतकृत्यश्च भारत।।15.20।।

iti guhyatamaṁ śhāstram idam uktaṁ mayānagha etad buddhvā buddhimān syāt kṛita-kṛityaśh cha bhārata

• iti - these
• guhya-tamam - most secret
• śhāstram - Vedic scriptures
• idam - this
• uktam - spoken
• mayā - by me
• anagha - Arjun, the sinless one
• etat - this
• buddhvā - understanding
• buddhi-mān - enlightened
• syāt - one becomes
• kṛita-kṛityaḥ - who fulfills all that is to be accomplished
• cha - and
• bhārata - Arjun, the son of Bharat

Translation

Thus, I have imparted to you this most secret science, O sinless one; by knowing this, one becomes wise, and all their duties are accomplished, O Arjuna.

Commentary