परिव्राजकानां भुक्त्वा ज्ञानागमं परम् ।
तृप्तिः परमा ज्ञेया, भोजनपात्रवत् तथा ॥१॥७३॥
Just as a food vessel must first be cleaned before nourishment enters — so the mind must first be purified through jnana-agama before param trupti can fill it.
The parivrajaka (wandering seeker) who first purifies their inner vessel through jnana-agama — scripture-rooted knowledge — gains param trupti. Those who approach spirituality with an unpurified mind find it unsatisfying and fall back. The vessel determines what the contents become. The same wisdom that lifts a purified mind leaves an impure mind unchanged, even hostile. Purification must precede reception. Jnana-agama — the continuum of scripture and its lived teaching — is the purifying agent.
The simple version: Pour the finest food into a vessel covered in soot and it becomes inedible. The problem was never the food. Clean the vessel first. Param trupti is available to everyone — but only the purified vessel can hold it.