I intended to perform Hajj on behalf of my father. How do I intend it for him when entering the state of ihram? And should I make du'a for myself or exclusively for him?

Question:
He says: Honorable Shaykh, may Allah grant you success. I intended to perform Hajj on behalf of my father, if Allah wills. How do I intend it for him when entering the state of ihram? And how is the du'a to be done during Hajj? Is the du'a for myself, or do I exclusively make du'a for him?

Answer:
When entering the state of ihram, you intend in your heart that the ihram is on behalf of your father. You intend it in your heart. And when you recite the talbiyah, you say, "Labbaik Allahumma 'an waladi fulan" (Here I am, O Allah, on behalf of my son so-and-so), and that is good; there is nothing wrong with it. As for the du'a, it is shared: you make du'a for yourself, you make du'a for your father, and you make du'a for the Muslims. Yes.