COMMENTARY on 24:13
A. Yusuf Ali:

Translation:
Why did they not bring four witnesses to prove it? 2966 When they have not brought the witnesses, such men, in the sight of Allah, (stand forth) themselves as liars!
Commentary:

2966  If any persons took it seriously, it was their duty to search for and produce the evidence, in the absence of which they themselves became guilty of slander.

 

Muhammad Asad:

Translation:
why do they not [demand of the accusers that they] 16 their allegation? 17 for, if they do not produce such wit­nesses, it is those [accusers] who, in the sight of God, are liars indeed!
Commentary:
16  This interpolation is necessary in view of the fact that the believers spoken of in the preceding verse are blamed, not for making the false accusation, but for not giving it the lie.
17  Lit., "in support thereof" (alayhi).