Are the very slight traces of turbidity and yellowishness that appeared on the tissue after it was inserted into the vagina, which occurred during the time of menstruation, considered menstruation, taking into account that they did not continue for a day and a night, and is it considered that if menstruation occurs later, it is proof that those traces were part of it? Is it a condition for the continuation of menstruation for a day and a night that the blood be continuous, and is it necessary to verify menstruation by inserting a tissue, or is seeing it sufficient?

A woman is not considered to be menstruating unless she sees blood, or what is similar to it, such as yellowish or brownish discharge, on the outer part of the vulva. If a woman doubts seeing yellowish discharge on the outer part of the vulva, the default is that she is pure.

If she is certain of seeing yellowish discharge, she may follow the opinion of those who do not consider it menstruation before seeing blood. This is easier for a woman who suffers from scrupulousness.

A single drop of blood is not considered menstruation by the majority of scholars because the minimum duration of menstruation is one day and one night. The questioner must cast away these intrusive thoughts and not succumb to them.