Namasthe

I want to have a serious discussion on the hindu marriage...its rules n rituals

According to which puran it says that the bride must be younger than the groom...

As per Ramayan Sita is said to be older than Rama and as per Mahabharat Draupadi must have been elder to atleast one of the pandavas...

Is there any such rule as per the kaliyug dharma....???

Regards
Sree