Namo tassa bhagavato arahato samma sambuddhassa
Honour to the Blessed One, the Exalted One, the fully and perfectly Enlightened One

Vacchagotta Sutta Comments

Introduction

When Buddha teaches a person, Buddha knows exactly who the person is, sees all his previous lives, his Kama, his ability of understanding, etc. Then Buddha would lead him to the right direction, saying the right words, right scenarios and examples, and right dhamma (laws).
Buddha uses various teaching methodologies to different persons, depending on the targeted listener's ability to understand. Buddha was the Greatest Teacher the world had ever seen.When Buddha was teaching to Vacchagotta, Buddha knows exactly how to teach him to make the dhamma clear. Finally, Vacchagotta saw the dhamma clearly and became follower of the Buddha. Someone like Vacchagotta had very good parami (good kama from previous lives). The way Buddha formulated to teach Vacchagotta might not be suitable to others (from other faith) to understand as Vacchagotta understood. Vacchagotta himself is an acetic and gone homelessness in search of truth. His background is Hindu who already understands Kama, samsara (a cycle of birth associated with suffering).
Prerequisites

The Ten Fetters (saŋyojana)

1. Delusion of 'selfhood' (sakkāya-ditthi)
2. Doubt or uncertainty, especially about the Dhamma (teachings) (vicikicchā)
3. Attachment to efficacy of rites and rituals for deliverance(sīlabbata-parāmāso)
4. Sensual desire(kāmacchando)
5. Ill will(vyāpādo or byāpādo)
6. Craving for material existence, lust for material rebirth(rūparāgo)
7. Craving for immaterial existence(arūparāgo)
8. Pride in self, conceit, arrogance(māno)
9. Restlessness, distraction(uddhaccaŋ)
10. Ignorance (avijjā)
Being is composed of Mind (Nama) and Matter (form) (Rupa)
Mind (Nama)
Feeling Vedana
Perception Sanna
Mental Formations Sankhara
Consciousness Vinnana
Matter (form) (Rupa)
Element Of Extension (Earth) Pathavi
Element Of Cohesion (Water) Apo
Element Of Heat (Heat) Tejo
Element Of Motion (Wind) Vayo

Five Aggregates (Panca Khanda) of existence affected by clinging
1. Matter (Rupa)
2. Feeling Vedana
3. Perception Sanna
4. Mental Formations Sankhara
5. Consciousness Vinnana
Everything we experience comes through these Six Sense Doors

1. eye and visible objects
2. ear and sound
3. nose and odor
4. tongue and taste
5. body and touch
6. mind and mental objects

Maha Satipatthana Sutta - The direct path for the purification of beings
Twenty four Conditionality of Life