ADHIKR

Swidq—the Truth—is one of the 40 names of Adhikr. As told in verse 69: 48, Adhikr is the Ticket for the heedful, and as told in verse 69: 50, Adhikr is a cause of sorrow for the disbelievers. As told in verses 75: 31-32, every Fajir who doesn’t testify to Adhikr, at the time of death, the Lord will tell him that he didn’t testify to Adhikr, and so he didn’t perform Salah, but he rejected and turned back. See explanation 2: 2-9; 7: 37; 49: 15; 92: 5-11.