The answer is "Mangalsutra".
Here's why:
* Ladka mohenjadaro Mahina pahanta Hai: This refers to a man wearing a mangalsutra during the month of "Mohenjadaro". However, "Mohenjadaro" is not a month. It is an ancient Indus Valley civilization. This hints at something worn by men but is associated with marriage.
* Ladki saal Me Ek Baar: This means a woman wears it once a year.
Therefore, the answer is mangalsutra because:
* Men usually wear it for a short period after their wedding.
* Women wear it continuously after marriage, usually only taking it off once a year for specific rituals.
Let me know if you'd like to try another riddle! 😊