Dry Urine, Unclean?

Ass, Mr. Ustadz, is it true that the underwear that has been exposed to droplets of urine is not valid to be used for prayer, what if the dry ones do not mean that they are washed and then dried in the sun but dry automatically when they are worn? Please explain, greetings. 081394524XXX

ANSWER: Wlkmslm. Yes, it is true, urine is considered unclean and we must not pray while wearing clothes that are unclean. Clothes exposed to unclean must be washed by washing them until the taste, color and smell are gone. Dry by itself means it is not washed first and it is still unclean. Allah knows best. *