Exegesis of the saying of Allah the Exalted: “So that Allah may forgive them the worst of what they did and reward them with the best of what they used to do.”

The lam here indicates the outcome, as it appears, because the lam of causation sometimes indicates causation and sometimes indicates the outcome. If what precedes it is the cause of what follows it, it is for the outcome; and if what follows it is the outcome of what precedes it and was not intended, it is for the outcome. This is the difference between them. So if you say: “I came to read, I came to read”, what is the lam here for?
The student: ...

The Shaykh : Yes.
The student: For causation.

The Shaykh : For causation. And if the one who says: “I traveled to have the accident happen to me”
The student: For the outcome.

The Shaykh : This is for the outcome.
The student: For the outcome.

The Shaykh : This is for the outcome. So the difference between them is: if what precedes it is the cause of what follows it, it is for causation; and if what follows it is the outcome of what precedes it and was not intended, it is for causation.
The student: For the outcome.

The Shaykh : It is for the outcome. It is for the outcome. All right. He, Mighty and Majestic, says: This is by His bestowing upon them the grace of pardon. Generally, forgiveness comes as a counterbalance to opposing deeds; so bad deeds are expiated by good deeds. Look at zihar: when a man commits zihar, he expiates it by mentioning Allah the Exalted, meaning he brings forth good deeds that cover what he did of sins. An oath: if he breaks it, what is it? He expiates it. So generally, forgiveness is in counterbalance, being good deeds that cover the bad deeds. And it is permissible for forgiveness to be mere grace from Allah the Exalted, where Allah covers the sin of His servant out of His generosity. And His saying: is a superlative noun, and it is in its proper place. So if Allah forgives them the worst of what they did, then what is less than that
The student: Is all the more so.

The Shaykh : Is all the more so. And this is the case, and the expression using “the worst” is by way of glad tidings for them. meaning their reward for the good deeds they did. meaning with the best reward. So His saying: And that is because a good deed is ten times its like, up to seven hundred times, up to many times. And “the best” here is in its proper place, meaning it is a superlative noun. So He does not reward them with a good deed for a good deed, but with something better than it, as you heard: a good deed is ten times its like, up to seven hundred times, up to many times. And His saying: It is not hidden that His saying: is a relative clause for the relative pronoun , and the relative clause of a relative pronoun requires a resumptive pronoun that refers back to the relative pronoun to link the clause to it. So what is the resumptive pronoun here?
The student: ...

The Shaykh : It is omitted, and the implied meaning is:
The student: They do.

The Shaykh : They do.