Answer

In Jain usage, Arham is the standard and most commonly accepted form.

• Arham: the common devotional spelling.
• Arhaam: usually just a different transliteration meant to show a longer “aa” sound.
• Arahum: another phonetic spelling used in some regions, but less standard.

Explanation

All three are generally trying to point to the same sacred sound in Jain devotion, but “Arham” is the form most often used in Jain prayers and writings.

The difference is mainly in spelling and pronunciation style, not in a separate meaning.

• Some people write Arhaam to show the voice slightly more stretched.
• Some write Arahum to match a regional pronunciation.
• In formal Jain context, Arham is preferred.

Spiritual Understanding

In Jain Dharma, the sacred remembrance of Arham is used with reverence. What matters most is:

• correct भावना, meaning sincere devotion
• pure intention
• respect for the sacred sound

The outer spelling is secondary to the inner spirit.

Takeaway

If you want the most standard Jain form, use Arham. The other spellings are mostly pronunciation-based variants, not different concepts.