Cover your breast with nothingness

“Cover your breast with nothingness, and draw over your head the robe of non-existence.”

Attar, mystic poet

Perplexity.ai had this to say:

MetaphorSufi Meaning
Cover your breast with nothingnessEmpty the heart of ego and worldly desires
Robe of non-existenceEmbrace self-annihilation (fanā) for union with the Divine

See Perplexity’s fuller explanation as to why you’d want to do what feels undesirable at the outset.