“Maha Aram” as you wrote it is not a standard Jain term. Most likely you are asking about:

“Maha Arham” / “Om Hrim Arham” / “Arham”

In Jain Dharma:

• “Arham” is a very important beej mantra (seed mantra).
• It comes from “Arihant” – the Tirthankar or Jina who has destroyed inner enemies (anger, ego, deceit, greed).
• “Arham” reminds us of:

- the pure soul, - free from passions and karma, - in the state of Arihant / Siddha.

Meaning in simple words:

• “Arham” – I remember / bow to the enlightened one (Arihant) and the pure state of my own soul.
• “Maha Arham” – “Great Arham”: said to give even more respect and greatness to this mantra and to the Arihant.

It is often combined as:

• “Om Hrim Arham” – a powerful Jain mantra used for:

- shuddhi (inner purification), - increasing peace and awareness of the soul, - remembering the qualities of Tirthankars.

If you meant something else by “maha aram” (like a specific stotra or ritual name), then it is probably a spelling or hearing mistake and is actually “Maha Arham” / “Arham” in Jain usage.