The word(s) "slander" appears 9 time(s) in 9 verse(s) in Quran in Mohsin Khan translation.

(1) It befits not (the Majesty of) Allah that He should beget a son [this refers to the slander of Christians against Allah, by saying that 'Îsa (Jesus) is the son of Allah]. Glorified (and Exalted) be He (above all that they associate with Him). When He decrees a thing, He only says to it: "Be!" - and it is.

(2) Verily those who brought forth the slander (against 'Aishah رضي الله عنها the wife of the Prophet صلى الله عليه وسلم) are a group among you. Consider it not a bad thing for you. Nay, it is good for you. Unto every man among them will be paid that which he had earned of the sin, and as for him among them who had the greater share therein, his will be a great torment.

(3) Why then, did not the believers, men and women, when you heard it (the slander), think good of their own people and say: "This (charge) is an obvious lie ?"

(4) Why did they not produce four witnesses? Since they (the slanderers) have not produced witnesses! Then with Allah they are the liars.

(5) And those who annoy believing men and women undeservedly, they bear (on themselves) the crime of slander and plain sin.

(6) O Prophet! When believing women come to you to give you the Bai'ah (pledge), that they will not associate anything in worship with Allah, that they will not steal, that they will not commit illegal sexual intercourse, that they will not kill their children, that they will not utter slander, intentionally forging falsehood (i.e. by making illegal children belonging to their husbands), and that they will not disobey you in Ma'ruf (Islamic Monotheism and all that which Islam ordains), then accept their Bai'ah (pledge), and ask Allah to forgive them. Verily, Allah is Oft-Forgiving, Most Merciful.

(7) A slanderer, going about with calumnies,

(8) Woe to every slanderer and backbiter.

(9) And his wife, too, who carries wood (thorns of Sa'dan which she used to put on the way of the Prophet صلى الله عليه وسلم, or use to slander him).