Mu, Maro ( मुं, म्हारो )

Meaning

Me, My

Use

Mu ( मुं ) is used to denote the following words in English - I, Me
Maro ( म्हारो ) is used to denote the following words in English - My, Mine

Example

Marwari - मु हुत्तो हूँ  ( Mu hutto hu. )
English  - I am sleeping

Marwari - काले मुं थारा हाते आई जाऊं।  (Kale mu thara hate aai gau ) 
English  - Tommorrow, I shall come with you

Marwari - म्हारो रुमाल कटे है।  ( Mahro Rumal kate hai )
English  - Where is my Rumal / Handkershief