They are rejoicing with the Favor and Bounty from Lord Allah. And indeed, Allah doesn’t deprive the reward of such believers.
During the time of Messenger, the believers were following him testifying Lord’s Book as the Bounty from the Three-Time-Knower Lord, whereas the hypocrites were in doubt about Messenger and Lord’s Book. Today, since Adhikr is formed as a Book, Lord has become Impartial. So, whoever holdfasts Lord by holding fast Adhikr which is the Safeguard, Ticket, Mercy, and Bounty, he will only return to Paradise. It is told in verse 51: 50: “Then you flee into the Lord, indeed Messenger is a manifest warner to you from Lord”. To flee into the Lord means to hurry to Adhikr which is the Clear and Manifest Reading. Those who flew away from hearing Adhikr are like the wild donkeys fleeing by hearing the lion’s roar as told in verses 74: 49-50. It is told in verses 9: 28 and 95 that the Fujjar are filthy. And it is told in verse 9: 125 that Adhikr will increase filth over filth to the Fujjar. See explanation 2: 38; 3: 74 and 22: 78.