The first: to be certain that the impurity affected both places, in which case he must wash them both.

The second: to be certain that it affected one particular one of them, in which case he washes that one alone.

The third: to consider it most likely that it affected one of them, in which case he washes that one alone, according to the stronger view.

The fourth: for the two possibilities to be equally likely in his view, in which case he washes them both.

According to the madhhab, the third case is like the fourth: he must wash them both.

The urine of a boy who has not yet begun eating food is purified by sprinkling water over it, .............

His statement, “The urine of a boy”: the mention of “urine” excludes feces, and the mention of “boy” excludes a girl.

His statement, “who has not begun eating food, by sprinkling water over it”: this excludes one who eats food—that is, one who takes nourishment from it.

Sprinkling means applying water to it without rubbing or wringing it, until the water covers all of it. The evidence for this is the hadith of Aisha (1) and Umm Qays bint Mihsan al-Asadiyyah: a boy was brought to the Prophet, peace and blessings be upon him, and he urinated on his garment. He called for water and poured it over the urine, but did not wash it. (2)

If it is asked: What is the wisdom behind the fact that the urine of a boy who has not yet begun eating food is sprinkled with water, rather than washed like the urine of a girl?