Bhagavad Gita Chapter 4 describes various Yajna (sacrifices / selfless actions) as spiritual disciplines to purify the mind and gain deeper realization.

Detailed Breakdown of Yajnas

CategoryYajna NamePerformerOffering / OblationThe Agni (Fire)Verse
Brahma VidyaBrahma YajnaRealised SageEvery thought, word & deedBrahman HimselfGita Verse 4.24
Jnana YogaStandard HavanBeginner (Karma Kanda)All actions (Niyata & Kamya)Agni DevaGita Verse 4.25
Gayatri HavanBeginner (Jnana Kanda)Scriptural studiesGoddess GayatriGita Verse 4.25
Brahma YajnaOne in SamadhiEgo-sense (Jeevatman)BrahmanGita Verse 4.25
Samyama YajnaOne practicing ShamaSense Organs (Indriya)Restraint of MindGita Verse 4.26
Indriya YajnaOne practicing DamaSense Objects (Vishaya)Restraint of IndriyasGita Verse 4.26
Atma-SamyamaOne practicing UparatiFunctions of Life ForceMastery over MindGita Verse 4.27
Raja YogaDravya YajnaPracticing YamaWealth & DesiresRenunciationGita Verse 4.28
Tapas YajnaPracticing NiyamaAusteritiesPurificationGita Verse 4.28
SwadhyayaPracticing NiyamaScriptural StudyPurificationGita Verse 4.28
Yoga YajnaPracticing AsanasYoga PracticesSelf-DisciplineGita Verse 4.28
Apara JnanaDharana & DhyānaAll ThoughtsConcentrationGita Verse 4.28
Para JnanaSamadhi (Savikalpa)All Vasanas”Brahmakara Vritti”Gita Verse 4.28
Prana YajnaPracticing PranayamaPranic ActivityPranaGita Verse 4.29
Ahara YajnaPracticing PratyaharaRestraint on FoodMind ControlGita Verse 4.30

Sources:

See also: