Assalamualaikum,
If the groom is unable to pay the Mehr amount before marriage/at the time of marriage and promises to pay later, and the bride agrees on this, is there any time duration during which the Mehr needs to be paid to the woman after marriage?
Jazakallah
الجواب وباللہ التوفیق
If the promise is to pay the Mehr after the Nikah then it is called Mehr e Muajjal. There is no specific time period to pay it, however, it should be paid as soon as possible because it is a loan, sooner as possible a person relieves himself from it it’s better.
واللہ اعلم بالصواب