It seems your message is incomplete or has a few spelling mistakes:

“Sacha sumantunath we call y”

I’m guessing you might be asking about one of these:

1. Bhagwan Sumatinath (5th Tirthankar)
2. A stav / bhajan / stuti starting with words like “Sachcha Sumatinath…” or similar
3. The meaning or correct name/pronunciation of “Sumantunath / Sumatinath”

To help you properly, please tell me clearly what you want:

• Do you want to know: Who is Bhagwan Sumatinath?
• Or the meaning/arth of some specific line or stavan?
• Or the correct name / spelling / uchcharan?

If you remember even 1–2 full lines of the stavan or sutra, type them here, and I will explain the meaning in simple language.