The fifth one out of the nine stages of settling the mind into a state of shamatha. Here, we no longer experience gross flightiness, the subtle flightiness of an undercurrent of thought, or gross or middling dullness. However, because we have overstrained to concentrate and have sunk too deeply inwards, we have relaxed the appearance-producing factor giving rise to the appearance of the object of focus. Consequently, we experience subtle dullness. We need to refresh and uplift the mental hold by remembering the benefits of gaining shamatha.
Tibetan: dul-bar byed-pa