Shaykh Muhammad ibn ‘Uthaymeen (may Allaah have mercy on him) said:
The correct view is that his wudoo’ is not invalidated when the period for wiping over the socks comes to an end. For example, if this times end at 12 noon, but you keep your wudoo’ until night time, you still have wudoo’. That is because there is no evidence to suggest that wudoo’ is broken by the time for wiping over the socks coming to an end. The Messenger of Allaah (peace and blessings of Allaah be upon him) set the time limit for wiping over the socks; he did not set a time limit for wudoo’. There is a principle that the seeker of knowledge should pay attention to, which is that what is proven by the shar’i evidence cannot be invalidated without further shar’i evidence, because what is proven remains as it is.