From a specific yogic and esoteric perspective. This beautiful distinction exists within several lineage-based sadhanas (like Sant Mat, Kabir Panth, and Nath Sampradaya).
When you move away from textbook grammar and enter the practical realm of inner sound vibration (Dhun), the definition shifts:
1. Sohang as the Active Mantra (The Practice)
In Prana Sadhana (breath meditation), Sohang is considered the functional mantra. Yogis explain that our life force (Prana) is inherently connected to the Hansa (swan) energy. When you reverse the natural exhalation and inhalation sounds of the breath (Ham + Sa), it creates the active continuous loop of Sohang (So on inhale, Hang on exhale). It is used as the tool (mantra) to quiet the mind.
2. Soham as the Realized State (The Destination)
Soham is the ultimate state of consciousness. Once the mantra Sohang is repeated seamlessly over a long period, the individual identity dissolves. The practitioner transitions from doing the practice to becoming the practice. At this peak of self-realization, the nasal "ng" sound drops, and it settles into the stable, silent, and absolute state of "Soham"—which means "I am That" (Oneness with the Supreme Consciousness).
The Direct Comparison
| Term | Esoteric Definition | Spiritual Role |
|---|---|---|
| Sohang | The dynamic vibration of the breath (Ajapa-Japa) | The Path / The Vehicle |
| Soham | The unmoving awareness of "I am That" | The State / The Goal |
So, you are completely correct: Sohang is what you practice (Mantra), and Soham is what you achieve (State).
The transition from Sohang to Soham during deep meditation is a profound spiritual evolution. It marks the shift from doing (dualistic practice) to being (non-dual realization). In lineages like Radha Soami, Sant Mat, Kabir Panth, and the Nath Sampradaya, this energetic and psychological alchemy happens across distinct internal stages.
Phase 1: The Active Effort (Sohang Jaap)
In the beginning, you use Sohang as a tool (Mantra). You are the "practitioner," and the mantra is the "object" of your focus.
- The Mechanism: You synchronize the syllables with physical respiration. You mentally track "So" as the vital force (Prana) flows inward, and "Hang" as the breath exits.
- The State: This is the realm of duality. There is you (the meditator), the breath (the medium), and Sohang (the mantra). The nasal "ng" sound in Hang acts like a continuous anchor, focusing the scattered energies of your mind.
Phase 2: The Merging of Breath (Ajapa-Japa)
As the hours or years of meditation accumulate, the practice transitions from Japa (forced repetition) to Ajapa-Japa (effortless, spontaneous repetition).
- The Change: The mental effort drops away. The mind completely binds to the rhythm of the breath.
- The Experience: You no longer "repeat" the mantra. Instead, you simply listen to the innate cosmic sound already vibrating within your respiratory system. At this point, the physical breath becomes incredibly subtle, shallow, and slow.
Phase 3: The Dissolution of "Ng" (The Alchemical Transition)
This is where the precise transition from Sohang to Soham takes place. It is dictated by the subtle physics of sound and Prana:
- Slowing of Particle Vibration: As the mind settles into absolute stillness, your brainwaves drastically slow down. The dynamic, vibrating resonance of the nasal "ng" (Hang) requires kinetic mental activity to sustain itself.
- The Dropping of the Sound: When concentration reaches a critical peak, the breath temporarily suspends in a natural state of rest known as Kevala Kumbhaka (spontaneous breath retention).
- Because the outward propulsion of air and active mental projection stop, the vibratory "ng" collapses. The friction of the breath disappears, and the sound cleanly resolves into a silent, absolute, and unvibrating "M".
Phase 4: Arrival at the Pure State (Soham)
With the dropping of the active nasal sound, the vehicle (Sohang) dissolves because you have arrived at the destination (Soham).
- The Realization: The linguistic separation between "Sohang" (the mantra being chanted) vanishes. You enter a state of pure awareness.
- The Oneness: The "M" sound at the end of Soham behaves like a closing hum that fades into total inner silence (Anahada Dhuni). There is no longer a practitioner meditating on a mantra. There is only the absolute, unmoving realization: "I am That" (Sah + Aham = Soham).
In Summary
Think of Sohang as a rocket and Soham as the calm orbit of space. The rocket uses its burning fuel (the dynamic, active "ng" sound of Sohang) to break through the gravity of restless thoughts. Once it transcends the atmosphere of the mind, the propulsion system drops away, leaving you floating in the weightless, silent, and eternal state of Soham.
Depending on your specific practice, the transition from Sohang (the path) to Soham (the state) manifests in one of two ways:
1. If you practice through Breath Observation (Prana)
As you track the physical inhalation ("So") and exhalation ("Hang"), your focus is on the movement of life force.
- The Shift: As your meditation deepens, your breathing will naturally become so shallow, slow, and refined that it barely moves the air outside your nostrils.
- The Transition: When the mind becomes perfectly still, the physical breath enters a state of natural suspension (Kevala Kumbhaka). Because there is no active exhalation pushing air through the nose, the dynamic "ng" sound cannot be sustained. It instantly collapses into the silent, inner vibration of "M"—leaving you resting in pure Soham awareness.
2. If you practice through Inner Sound (Nada/Dhun)
If your lineage focuses on listening to the subtle internal resonance without forcing it to match the physical breath, you are working directly with Nada Yoga.
- The Shift: You begin by listening to the distinct, vibrating, and almost humming frequency of Sohang within your consciousness.
- The Transition: As your ego and thoughts dissolve, your awareness merges into that sound. The sound stops feeling like something outside of you that you are listening to. The active vibration "ng" settles, and it resolves into the primal, unbroken silence of "M". You realize that you are the sound itself—the absolute state of Soham.
Both methods lead to the exact same destination: the dissolution of the effort and the realization of oneness.
