The Iddah of death begins...

The Iddah of death begins, in situation when the husband has disappeared or is absent, when the wife learns of his death, and not from the time when he actually died. But this rule does not, as a precaution, apply to a wife who has not attained the age of Bulugh, or if she is insane. If a woman says that her Iddah is over, her word can be accepted unless she is known to be unreliable, in which case, her word, as a precaution, will not be accepted.

For example, if she claims to have menstruted three times in one month, her claim will not be trusted, except…