Bhagavad Gita, Chapter 4, Verse 3

स एवायं मया तेऽद्य योगः प्रोक्तः पुरातनः । भक्तोऽसि मे सखा चेति रहस्यं ह्येतदुत्तमम्

sa evāyaṃ mayā te'dya yogaḥ proktaḥ purātanaḥ | bhakto'si me sakhā ceti rahasyaṃ hyetaduttamam

Translation

That same ancient Yoga has been today taught to thee by Me, seeing that thou art My devotee and friend; for, this is the Supreme Secret.

— Alladi Mahadeva Sastri

Word meanings

saḥ
this
eva
even
ayam
this
mayā
by me
te
to thee
adya
to-day
yogaḥ
yoga
proktaḥ
declared
purātanaḥ
ancient
bhaktaḥ
devotee
asi
(thou) art
me
my
sakhā
friend
ca
and
iti
thus
rahasyam
secret
hi
indeed
etat
this
uttamam
best

Śaṅkarācārya's commentary

This knowledge, this Yoga, is the Supreme Secret. Seeing that the Yoga has been lost by falling into the hands of the weak who could not control their senses, and seeing also that the people have not been able to attain the object of life, the Lord teaches it again to Arjuna.