Imam Zamin refers to the 8th Shia Imam, Imam Raza, who is believed to be a guardian of travelers. In Pakistan and India, people use the term to refer to a custom wherein they tie an armband containing money to a person’s right arm before they embark on a journey, or some auspicious event. After successfully completing the trip/event, the armband is removed and the money inside it is donated to charity. It’s essentially a form of “nazr.”
It’s mostly a Shia custom, but I have seen some Sunni people (usually from culturally Shia places like Lucknow & Hyerabad) doing it as well.
