The Imamate of One Who has Problems with Continual Leakage of Urine
Question :
Is it permissible for one who has incontinence of urine to lead the congregation in prayer? And is it permissible for him to wipe over his socks? And how is this accomplished?
Answer:
It is not permissible for one who has incontinence of urine to lead the people in prayer, even others like himself, this is because purification is completely lost. But he is allowed to pray with the congregation in the mosque, if there is no fear that he will soil the mosque. He may wipe over his leather socks or thick socks.
Source:
Ibn Jibreen
Fatawa Islamiyah, Vol. 2 Page 421