In Jain dharma, man–vachan–kaya are treated as three separate “channels of activity” (yog), even though they are connected.

1. Kriyā alag‑alag kyon gini jātī hai?

• Man (mano‑yoga) – jo bhi soch, ichchhā, niyati, planning ho rahi hai, chahe bahar na aaye.
• Vachan (vachan‑yoga) – jo shabd tak pahunch chuka hai: bolne ki tayyārī, honth–jihvā ki hālbchal, dhvani.
• Kāy (kāya‑yoga) – sharīr ki hār–jār, hāth–pāon se ki gayī kriyā.

Karm‑bandh in tīno yog se alag‑alag gina jātā hai. Isliye śāstron me vachan ko man ya kāy ke andar “milā” kar nahi lete; use alag yog mānte hain.

2. “Vachan to man se hi nikalta hai, phir alag kyon?”

• Hā̃, vichār pehle man me utpann hote hain, par sab vichār bol nahi bante.

- Kuchh keval man me rahe – ye sirf mano‑yoga. - Kuchh vichār shabd ban kar nikal gaye – ye vachan‑yoga.

• Isi tarah, har vachan sharīrik ang (jihvā, gala, fefde, hont) se nikalta hai, lekin

- bolne ki kriyā ko vachan‑yoga - aur sharīr ki cal‑phir ko kāya‑yoga bolte hain.

Yani, source chahe man/kāy ho, lekin karm‑gaṇanā me channel alag hai:

• sirf soch – man
• sirf bol – vachan
• sirf sharīrik hinsa – kāy

Kahin teenon ek sath bhi ho sakte hain (man se socha, muh se bola, sharīr se kiya).

3. Vyavahār me iska faydā kya? Is alag‑alag ginne se hame ye samajhne me madad miltī hai ki:

• sirf galat soch bhi karm bandh kartī hai (man ki śuddhi jarūrī).
• kathor ya jhūṭh vachan alag se bhaṛe karm bandhte hain (vachan‑saṃyam jarūrī).
• sharīrik hinsa alag se bhaṛa karm bandhti hai (kāy‑saṃyam jarūrī).

Isliye Jain dharma me tīn gupti batāyī:

• mano‑gupti (man ki rakṣā)
• vachan‑gupti (vachan ki rakṣā)
• kāy‑gupti (kāy ki rakṣā)

Tīn alag hone se hi tīn prakar se saṃyam aur pratikramaṇ spaṣṭ ho pate hain: “man se, vachan se, kāy se jo bhī aparādh hua, use main marta hũ, kṣamā māgtā hũ.”

Is tarah, vachan ko alag ginne ka uddeshya ye hai ki man, bol aur kāy ke prati hamārī jāgr̥ti aur saṃyam teeno star par spaṣṭ aur pūrn ho.