Assalaamu alaykum. Last time, when I send you question 2670927, I did receive an answer; may Allah reward you, but I nevertheless did not get the answer to my question. So this time, I will try to explain myself in a way that is more clear. Vaginal discharges are pure, and they happen often. So, many times, I am certain that some discharge has come out; so what I mean is, whenever I am certain that some discharge has come out, do I have to check whether it is Mathiy (pre-seminal fluid) or Wadiy (post-ejaculatory fluid) before praying given that vaginal discharges are so common that we might have to check for every prayer and after every prayer? I do not think this was done in the Prophet's, sallallaahu ‘alayhi wa sallam, time. I go to college. I usually simply go and pray and do not even perform ablution based on the conclusion that my ablution is still valid for the ‘Asr. One Shaykh told me there is no need to check each and everytime.

All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallahu ‘alayhi wa sallam, is His slave and Messenger.

You should know that the basic principle is that no Mathi or Wadi was discharged; hence, you are not required to check whether these discharges are vaginal or otherwise. Rather, it is sufficient for you to act upon the basic principle in this regard and consider this discharge to be vaginal. It is ritually pure, but it does invalidate ablution.

Moreover, if you suffer from incontinence of such vaginal discharge, you should perform ablution for each obligatory prayer after its time has become due and then perform the obligatory prayer and whatever voluntary prayers you wish until its time expires.

If you doubt whether this discharge is Mathi or vaginal discharge, you are given the choice to consider it as either of them and act upon the relevant ruling, according to the view adopted at Islamweb. Please, refer to fatwa 358021. We also advise you to disregard Waswaas (obsessive doubts), because letting yourself get carried away with them leads to grave evils.

Allah knows best.