Write a letter to a friend congratulating her/him on performing pilgrimage.
Dear Nawaz,
How are you? Imran told me yesterday that you came back to Pakistan from Saudi Arabia after doing the pilgrimage. I immediately wanted to write you a letter to say congratulations on doing Hajj. It's a really special thing. God has been very kind to you. He gave you the chance to go to His House and the Radiant Medina. You should thank God for your good luck. I bet it was an amazing experience for you. That's the best thing a person can wish for in their life.
I want to give you my biggest congratulations. I'm so happy that you got to go to the holy city of Makkah. You're really lucky that God blessed you like this. You should be grateful to Him that He let you do this important thing as a Muslim. Please write and tell me about the spiritual things you felt and what life was like there.
Best wishes,
Yours sincerely,
Arslan