What is the term for the amount of mahr (dowry) that is immediately paid after the nikkah in Islamic marriage?

What is the term for the amount of mahr (dowry) that is immediately paid after the nikkah in Islamic marriage?

نکاح کے فوراً بعد ادا کیا گیا مہر کیا کہلاتا ہے؟
Explanation

Mahr al-Muajjal refers to the mahr (dowry) portion paid immediately, right after the nikkah (marriage contract). 

The remaining amount, if any, can be paid later and is referred to as mahr al-Mithli or mahr al-Musamma.