Mandukya Karika, verse 2.37


निःस्तुतिर्निर्नमस्कारो निःस्वधाकार एव च ।
चलाचलनिकेतश्च यतिर्यादृच्छिको भवेत् ॥ ३७ ॥

niḥstutirnirnamaskāro niḥsvadhākāra eva ca |
calācalaniketaśca yatiryādṛcchiko bhavet || 37 ||

37. The man of self restraint should be above all praise, salutation and all rites prescribed by the Smṛti in connection with the departed ancestors. He should have this body and the Ātman as his support and depend upon chances, i.e., he should be satisfied with those things for his physical wants, that chance brings to him.

Shankara Bhashya (commentary)

What should be his code of conduct in the world? It is thus stated:—He1 should give up all such formalities as praise, salutation, etc., and be free2 from all desires for external objects. In other words, he should take up the life of a Paramahamsa Sannyāsin.3 The Śruti also supports this view in such passages as “knowing this Ātman”, etc. This is further approved in such Smṛti passages as, “With their consciousness in That (Brahman), their self being That, intent on That, with That for their Supreme Goal” (Gītā), etc. The word “chalam” in the text signifying “changing” indicates the “body” because it changes every moment. The word “Achalam” signifying “unchanging” indicates the “Knowledge of Self”. He4 has the (changing) body for his support when he, for the purpose of such activities as eating, etc., forgets the Knowledge of the Self, the (real) support of Ātman, unchanging like the Ākāśa, (ether) and relates himself to egoism. Such5 a wise man never takes shelter under external objects. He entirely depends upon circumstances, that is to say, he maintains his body with whatever food or strips of cloth, etc., are brought to him by6 mere chance.