Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

In the Name of Allah, the All-Merciful, the Mercy-Giving

All praise is due to Allah. Peace and blessings be upon His Messenger Muhammad.

 

The preferred view is to have one menstrual cycle. This is based on the report of Ar-Rubayyi bint Mu`awwidh bin Al-Afra who narrated that she got a Khul` during the time of the Prophet. So the Prophet ordered her – or: she was ordered – that she observe an Iddah of a menstruation.” (At-Trimidhi: 1185; Abu Dawud: 2229 ; An-Nas’i: 3394).

 

Almighty Allah knows best.