In Bharata’s Natyashastra, the development of Rasa depends on the following essential elements:
Vibhava (Determinants) – The cause or stimulus for an emotion.
Anubhava (Consequents) – The outward expression of emotions.
Vyabhicharibhava (Transitory states) – The fleeting emotions that support the main emotion.
Alankara (figure of speech or ornamentation) is a literary device in poetics rather than an essential component of Rasa formation.