Question:

Is white discharge considered Najis (Impure)? If a woman prayed with clothes that had traces of white discharge then will her Salaah be accepted?

Answer:

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
Every woman suffers from white discharge (vaginal discharge). It is light, limpid, viscid and mucous. The discharge is mucus that is produced from the womb neck (cervix) in a natural way. It is fluids and cells that are excreted for keeping a female’s vagina clean and to protect it.
At the outset, vaginal discharge is pure and does not invalidate Wudhu.In other words, one may perform Salah and carry out other actions without renewing Wudhu after discharge. Nevertheless, if one decides to clean herself and renew Wudhu after discharge, she may do so.
This ruling is applicable as long as the discharge is clear or white (normal color). If it is mixed with blood or discharge due to arousal (Madhi) the Wudhu will be invalidated.
Note: After taking Ghusl from intercourse, if the female feels that her husband’s semen is mixed with her vaginal discharge she must renew her Wudhu and cleanse the affected area before performing Salah.
And Allah Ta’āla Knows Best
Mufti Ebrahim Desai.