In which they are disagreeing.
The Fujjar—including the hypocrites and their blind followers—doubt the Day of Judgement, on which the reckoning of everyone will be done by reading the Book of deeds fastened upon each individual’s neck, as explained in verses 17: 13-14. They have such doubt because, as told in verse 56: 82, they have made their food rejecting Adhikr. It is told in verses 39: 69 and 75 that on the Day of Judgement, the Standard of Judgement will be Adhikr—the Truth; and in verse 40: 78 it is told that on the Day when Judgement is done utilizing Adhikr, the falsehood followers—Fujjar—will be the losers. The believer, by understanding from Adhikr—the Confirming Truth mentioned in verse 69: 48—the aim of deputing him to this earth, will ensure from this world itself that his return will be to Paradise. See explanation 16: 64; 75: 14-15; and 77: 41-44.