Dear esteemed Indologists,

I am trying to remember a term I once encountered that refers to a particular poetic modality or topos that recurs throughout pre-modern South Asian poetry -- for example, in the dohākośa and caryāgīti of Buddhist siddhas, in Nāth bāṇī attributed to figures like Carpaṭnāth and Jalandhara, and in Sikh gurbāṇī. Specifically, I am talking about the association of "external" sectarian/sartorial markers with "internal" qualities, and even the eschewal of the former in favor of the latter.

For example (these are paraphrased/hypothetical, not exact quotes), a bāṇī attributed to Carpaṭnāth might say something like "I don't wear the sacred thread because truth is my sacred thread. I don't wear the kundal earrings because the guru's words are my earrings." Or a song attributed to a Buddhist siddha might say "What need is there for shaving my head when wisdom is my shaven head? What need is there for wearing robes when I am robed with compassion?" We see similar verses attributed to Guru Nanak in the Sidh Ghoṣṭi, and also attributed to Kabirdās, romantic poets, etc.

I remember reading somewhere that there is a word for this type of poetic modality, but for the life of me I cannot remember the word or the source. I might be misremembering. I would be very grateful for your help in remembering this term and for any secondary sources you can recommend on the topic. 

Thank you.