"The person who gave you this potion doesn't wish to reveal his name, so I can only keep it a secret. He gave it as a kind gesture, and if you refuse to accept it, I think it would make him sad." Dumbledore didn't reveal Snape's intentions. After all, his identity had to remain completely secret for now.
"I understand. Thank you, and please thank your friend for me as well." Anduin wasn't one to be overly fussy about it. Since the person insisted on giving it to him, refusing would be rude. He wasn't that kind of person. Besides, with a potion this incredible, Anduin simply couldn't bear to turn it down. It was just too good.
"I'll pass your thanks along. The Potter couple and Sirius asked after you a couple of days ago. Unfortunately, I haven't been able to spend much time in my office, looking after the students. Is there anything you'd like me to tell them?" For a long time, Dumbledore had been traveling from place to place, either persuading members of the Wizengamot Council or discussing plans with the Order of the Phoenix's veterans. When he was in his office, he spent most of his time writing and reading letters, monitoring the Death Eaters' movements, and so on. Dealing with the Dark Lord had indeed taken up a great deal of his energy.
Hearing Dumbledore say this, Anduin realized he hadn't written to his friends in quite a while. "Could you pass a message to Sirius for me? Tell him not to mess up the room I spent so much time tidying."
Dumbledore nodded with a smile.
"And please tell the Potter couple that I'm doing well, and that I'm very grateful for their gift. Also, tell them to stay safe and be careful