Tayammum: Is it nullified when the time of prayer elapses?
All praise be to Allah Alone, and peace and blessings be upon His Messenger, and his family and Companions.
The sound view of scholars is that
Tayammum is not invalidated by the end of the prayer time for which a person performed Tayammum; rather it is invalidated when water is present or by the occurrence of any of the annulments of Wudu’ (ablution).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.