He only uttered the intention for making `Umrah after passing by the Miqat

Q 2: I passed by the Miqat (site for entering the ritual state for Hajj and Umrah) but I did not utter the intention for making Umrah. Please take into account that my intention to perform Umrah had already been made beforehand, but I forgot to utter it as I was passing the Miqat. Please tell me what I must do. A2: It is Wajib (obligatory) upon the one who heads to Makkah intending to perform Hajj or Umrah and is outside the Miqats in Makkah to assume Ihram from their designated locational Miqat if they pass by them or was in their vicinity if they are not on their route or if they were on a plane. The Prophet (peace be upon him) said: These (Miqats) are meant for people living at these (places) as well as for others who pass by them on their way to perform Hajj or 'Umrah. Whoever is living within these boundaries can enter Ihram from his home. Based on this, it is Wajib to make a Fidyah (ransom) because you neglected to do a Wajib act of Hajj out of forgetfulness and you did not go back to make your intention at the proper site (Part No. 10; Page No. 151

A2: It is Wajib (obligatory) upon the one who heads to Makkah intending to perform Hajj or Umrah and is outside the Miqats in Makkah to assume Ihram from their designated locational Miqat if they pass by them or was in their vicinity if they are not on their route or if they were on a plane. The Prophet (peace be upon him) said: These (Miqats) are meant for people living at these (places) as well as for others who pass by them on their way to perform Hajj or 'Umrah. Whoever is living within these boundaries can enter Ihram from his home. Based on this, it is Wajib to make a Fidyah (ransom) because you neglected to do a Wajib act of Hajj out of forgetfulness and you did not go back to make your intention at the proper site (Part No. 10; Page No. 151) when you remembered. Therefore, you must slaughter a sheep or offer one seventh of a cow or a Badanah (a camel or a cow or an ox driven by pilgrims to be offered as sacrifice within the sacred precincts of Makkah) to be slaughtered in Makkah and you should distribute its meat among the poor of Al-Haram (all areas within the Sacred Sanctuary of Makkah).It does not suffice to make the intention for Umrah beforehand from the time you set out and during the journey. You must make the intention to perform the rites at the time of passing the designated Miqat or if you are passing over it on a plane or if your route lacks a Miqat site. You cannot assume Ihram for Hajj or Umrah except by doing this.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.