What is the ruling on one who intends to perform 'Umrah on behalf of another person and forgets to mention his name?

Question:
This questioner says: He entered the state of ihram intending to perform 'Umrah on behalf of his father. He entered ihram for 'Umrah on behalf of his father, but he forgot to mention his name when entering ihram.

Answer:
No, it is not necessary. The intention is sufficient. If you intend when entering ihram that the 'Umrah is on behalf of someone, the intention in the heart is sufficient. If you verbalize it, there is no harm; you say, "Labbaik on behalf of so-and-so." You mention it in the talbiyah. You do not say, "I intend to enter ihram on behalf of so-and-so." You say, "Labbaik, Allah, on behalf of so-and-so," just as the Prophet (peace and blessings be upon him) heard a man saying, "Labbaik on behalf of Shubrumah," and he approved him for that. So, mention it in the talbiyah. Even if you do not mention it, the intention in the heart is sufficient, and praise be to Allah.