Four kinds of liberations

मुक्तिनिरुपणं नामैकचत्वारिंशोऽध्यायः

Liberation description Chapter 41

सूत उवाच |

Suta Goswami said (to the sages)

मुक्तिश्चतुर्विधा प्रोक्ता श्रूयतां कथयामि वः |

संसारक्लेशसंहर्त्री परमानन्ददायिनी || 2 ||
सारुप्या चैव सालोक्या सान्निध्या च तथा परा |

सायुज्या च चतुर्थी सा व्रतेनानेन य भवेत् || 3 ||

Killer of the sufferings of this world and giver of highest joy, liberation is said to be of four kinds. Listen, I (will) tell you.
Saarupya, Saalokya, Saannidhya and the higher Saayujya, the fourth, which happens with this (Shivratri) vow.

And there is also a fifth one, Kaivalya, which is mentioned later.