Gita Chapter 10.11 to 10.15

Teshaam evaanukampaartham aham ajnaanajam tamah;
Naashayaamyaatmabhaavastho jnaanadeepena bhaaswataa.
11. Out of mere compassion for them, I, dwelling within their Self, destroy the darkness born of ignorance by the luminous lamp of knowledge.

Arjuna Uvaacha:
Param brahma param dhaama pavitram paramam bhavaan;
Purusham shaashvatam divyam aadidevamajam vibhum.
Arjuna said:
12. Thou art the Supreme Brahman, the supreme abode (or the supreme light), the supreme purifier, the eternal, divine Person, the primeval God, unborn and omnipresent.

Aahustwaam rishayah sarve devarshirnaaradastathaa;
Asito devalo vyaasah swayam chaiva braveeshi me.
13. All the sages have thus declared Thee, as also the divine sage Narada; so also Asita, Devala and Vyasa; and now Thou Thyself sayest so to me.

Sarvametadritam manye yanmaam vadasi keshava;
Na hi te bhagavan vyaktim vidurdevaa na daanavaah.
14. I believe all this that Thou sayest to me as true, O Krishna! Verily, O blessed Lord, neither the gods nor the demons know Thy manifestation (origin)!

Swayamevaatmanaatmaanam vettha twam purushottama;
Bhootabhaavana bhootesha devadeva jagatpate.
15. Verily, Thou Thyself knowest Thyself by Thyself, O Supreme Person, O source and Lord of beings, O God of gods, O ruler of the world!

Gita Chapter 3.06 to 3.10

Karmendriyaani samyamya ya aaste manasaa smaran;
Indriyaarthaan vimoodhaatmaa mithyaachaarah sa uchyate.
6. He who, restraining the organs of action, sits thinking of the sense-objects in mind, he, of deluded understanding, is called a hypocrite.

Yastwindriyaani manasaa niyamyaarabhate’rjuna;
Karmendriyaih karmayogam asaktah sa vishishyate.
7. But whosoever, controlling the senses by the mind, O Arjuna, engages himself in Karma Yoga with the organs of action, without attachment, he excels!

Niyatam kuru karma twam karma jyaayo hyakarmanah;
Shareerayaatraapi cha te na prasiddhyed akarmanah.
8. Do thou perform thy bounden duty, for action is superior to inaction and even the maintenance of the body would not be possible for thee by inaction.

Yajnaarthaat karmano’nyatra loko’yam karmabandhanah;
Tadartham karma kaunteya muktasangah samaachara.
9. The world is bound by actions other than those performed for the sake of sacrifice; do thou, therefore, O son of Kunti, perform action for that sake (for sacrifice) alone, free from attachment!
COMMENTARY: If anyone does actions for the sake of the Lord, he is not bound. His heart is purified by performing actions for the sake of the Lord. Where this spirit of unselfishness does not govern the action, such actions bind one to worldliness, however good or glorious they may be.

Sahayajnaah prajaah srishtwaa purovaacha prajaapatih;
Anena prasavishyadhwam esha vo’stvishtakaamadhuk.
10. The Creator, having in the beginning of creation created mankind together with sacrifice, said: “By this shall ye propagate; let this be the milch cow of your desires (the cow which yields the desired objects)”.