nishtha | निष्ठा
Nishtha (Devanagari: निष्ठा; ISO 15919: niṣṭhā) refers to unwavering steadfastness toward the Guru, the path revealed by him, and the chosen Deity.
In the gradual progression of devotion—specifically while moving from Sadhana Bhakti toward Bhava Bhakti—the attainment of this steady state is recognized as the fifth stage.