shekh ibn uthameen fatwa on the one who finds drops oozing out after he has been to the toilet and performed his istinja is that he sould perform the istinja and then when the time for prayer has entered then he should perform the wudoo .

Q- What about when one is combining the prayer due to travel if the drops come in between the two prayers ie . after he has performed his Zhur BUT BEFORE HE HAS MADE THE IQMA FOR ASR OR ANY TIME WITHIN THE ZHUR PRAyER IE .

BEFORE HE SAYS HIS IQAMA FOR THE ASR DOES SUCH A PERSON HAVE TO PERFORM THE WUDOO AGAIN FOR HIS SECOND PRAYER IE ASR IN THIS CASE.


Praise be to Allaah.
 

If the
urinary incontinence is continual and does not stop when you are praying,
then you should pray ‘Asr with the same wudoo’; you do not have to repeat
the wudoo’. 

But if the
incontinence stops, then a few drops come out during the period between the
two prayers, then you have to repeat the wudoo’. And Allaah knows best.