Because sometimes when I take off my clothes I find that a little urine has come out without me realising it. Do I have to change my underwear for every prayer? Or i should just put tissue May Allaah reward you with good.
If you are certain that some drops of urine have come out, then you have to clean yourself again and repeat your wudoo’ for each prayer,
and you have to wash off whatever urine has got onto your clothes.
we come to the most important what if the urine has come out the time of prayer during or before prayer and you can not hold it more than enough time to do prayer even if you did wudoo (ablution) again it will come out.
you do only one time wudoo(ablution) then you should wrap it with extra cloth to ensure it does not go to underwear
Salaamun'alaykum. If as the brother asks, without him '... being aware of it.' then may I say that since he was not aware as at the time he prayed, then the prayer remains VALID.
والله اعلم (And Allaah knows best.)