Sthāyī (what is permanent) here is a synonym for sthāyi-bhāva, just as Bhīma means Bhīmasena. Therefore, the sthāyi-bhāva is that which does not give up its form. When the particular sthāyi-bhāva called śānta-rati becomes pleasurable (svādyatāṁ gataḥ) or takes on a pleasurable form for those who are śama (śaminām), after mixing with the vibhāvas etc. which will be described, it is called śānta-bhakti-rasa by the wise. Though three types of śuddha-rati—sāmānya, svaccha and śānti—have already been described, [Note: These are described in 2.5.8.] only śānta-rati gives rise to rasa. That is because in sāmānya-śuddha-rati the components of rasa cannot be nourished since sāmānya-śuddha-rati is undeveloped or weak. In svaccha-śuddha-rati, the components of rasa such as vibhāva and anubhāva cannot be nourished since svaccha-śuddha-rati is unstable in nature.