When is a person considered to have overstepped the Miqat, what is the permissible distance for overstepping, and is uttering the intention (for Hajj/Umrah) fifty meters after the Miqat mosque considered overstepping the Miqat, and what is required in that case?

First: Ihram is the intention to enter the ritual, and whoever intends to perform Umrah or pronounces the talbiyah without the intention to enter the ritual, their Ihram is not valid.

Second: The Prophet, peace and blessings be upon him, did not specify particular areas for the Miqats, but rather mentioned well-known places (such as Dhul-Hulayfah and Qarn al-Manazil). These Miqats are great valleys, and what matters is the place to which the name of the Miqat applies, not the mosque built therein. One can enter into Ihram from any part of the Miqat.