Say, "He is the [one] Able to send upon you affliction from above you or from beneath your feet or to confuse you [so you become] sects1 and make you taste the violence of one another." Look how We diversify the signs that they might understand.
Translation: Saheeh International (English)
1 Following your own inclinations rather than the truth, biased and hostile toward each other.
Say to them, O Messenger: Allah is the One able to send upon you a punishment that will come to you from above, such as stones, thunder-bolts and floods, or that will come to you from below, such as earthquakes and sinking into the ground. He can also cause disunity between your hearts, making each person follow their desire and making you fight one another. Think, O Messenger, about how I explain to them the evidence in various ways, so that they realise that what you have brought to them is the truth and what they have is false.