J.K. Rowling is known for interacting with fans (and foes) on Twitter, but this Thursday the author sent a particularly sweet message to a fan who was fasting for Ramadan.

Mujtaba Alvi, a 21-year-old from Toronto on break from school, was rereading Harry Potter and the Order of the Phoenix when he tweeted at Rowling, telling her that the descriptions of food in the fifth Harry Potter book were hard to take while fasting. During Ramadan, the Muslim holy month, those who follow the faith abstain from all beverages and food from dawn until sunset.

To his surprise, Rowling tweeted him back with a helpful tip, suggesting that he read the seventh book in the series, Harry Potter and the Deathly Hollows, next.

In that book, young wizards Harry, Ron and Hermione are often forced to go without food.

Alvi, who calls himself a “true Potterhead,” told TIME that seeing Rowling’s response was “surreal.” Plus, Thursday was his birthday—Rowling’s tweet, he said, was the “greatest gift ever.”

Alvi told TIME he probably will take Rowling up on her suggestion to read Deathly Hollows next. “JK Rowling told me to,” he said via Twitter direct message.

That should be an easy assignment for the Potter fan, who said he’s read the books “multiple times.”

H/t BuzzFeed.

Get The Brief. Sign up to receive the top stories you need to know right now. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.