B.G 6.01
śrī bhagavānuvāca
anāśritaḥ karmaphalaṁ kāryaṁ karma karoti yaḥ। sa saṁnyāsī ca yogī ca na niragnirna cākriyaḥ ॥1॥
The revered Divine Lord said,
One who performs activities without seeking the fruits of the action is both a renunciant and a Yogi. Not he who is devoid of fire, as well as activities.
Gīta Tātparya 6.01
The method of meditation is explained exclusively in this chapter. The ascetics are not without sacrificial fire. Indeed, they are offering their own self as a sacrifice.
॥hariḥ oṁ॥
Lord Hari oonly is Om!
dhyānamatrocyate।
The method of meditation is explained exclusively.
"sa brahmaniṣṭhastu yatirmahātmā śārīramagniṁca mukhe juhoti।"
"The great ascetic who is established in Brahman offers into the sacrificial fire of the body through his mouth." (For an ascetic, his body itself in the sacrificial fire, and food he eats through his mouth is like a sacrificial offering.)
ityādeḥ na yaterapi anagnitvam। ātmasamāropaṇācca ॥1॥
Such testimonials indicate that ascetics are not without sacrificial fire. Indeed, they are offering their own self as a sacrifice.