Al-Isra' - 17:53

وَقُل لِّعِبَادِي يَقُولُواْ الَّتِي هِيَ أَحْسَنُ إِنَّ الشَّيْطَانَ يَنزَغُ بَيْنَهُمْ إِنَّ الشَّيْطَانَ كَانَ لِلإِنْسَانِ عَدُوًّا مُّبِينًا
[17:53]
And say to My servants (that) they speak that which is best; surely the Shaitan sows dissensions among them; surely the Shaitan is an open enemy to man.
Say to My servants that they should (only) say those things that are best: for Satan doth sow dissensions among them: For Satan is to man an avowed enemy.
Tell My bondmen to speak that which is kindlier. Lo! the devil soweth discord among them. Lo! the devil is for man an open foe.