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And [there are] others (ākharūn is the subject), [another] folk, who have confessed their sins, for having stayed behind (i'tarafū bi-dhunūbihim is an adjectival qualification of it [the subject] and the predicate is [the following, khalatū 'amalan sālihan]) they have mixed a righteous deed, that is, their former [participation in the] struggle, or the their confession of their sins, or otherwise, with another that was bad, which is their having stayed behind. It may be that Allahu ta’ālā will relent to them. Truly Allahu ta’ālā is Forgiving, Merciful: this was revealed regarding Abū Lubāba and a group of men who tied themselves to the walls of the mosque after they heard what had been revealed regarding those who stayed behind; they swore that only the Prophet "sallallahu 'alayhi wa sallam" would untie them, which he did when this [verse] was revealed.