Does the ritual purity of one afflicted with سلس (urinary incontinence) not invalidate unless he performs the prayer for which he purified himself, according to the Shafi'is, apply exclusively to the chronic sufferer, or does it include the temporary one? And if there is no specified time for the cessation of the سلس, is it considered chronic? And is it obligatory to ascertain after the prayer whether the سلس has ceased or not in the subsequent period, in order to confirm the validity of the prayer, if the fatwa applies only to one who is afflicted with chronic سلس?

The statement referred to is one view among the Shafi'is, but it is not the relied-upon opinion. The person afflicted with سلس (urinary incontinence) is one who knows that he cannot find a time to pray with a valid purification. As for someone who experiences سلس sometimes but not always, each instance has its own ruling. If the urine flow stops for a period sufficient to perform ablution and prayer, then he must wait and pray during that time. It is not permissible for a Muslim to undertake an action until he ascertains God's ruling on it, and it is obligatory to ask people of knowledge when there is a difficulty. If one receives conflicting fatwas, he should follow the one whose knowledge and religiousness he trusts.