"Or Allah will mingle your hearts together and curse you as He cursed them."

Abu Dawud said: This tradition has been transmitted by al-Muharibi, from al-'Ala bin al-Musayyab, from 'Abd Allah bin 'Amr bin Murrah, from Salim al-Aftas, from Abu Ubaidah, from 'Abd Allah; and it is been transmitted by Khalid al-Tahhan, from al-'Ala, from 'Amr bin Murrah from Abu 'Ubaidah.
Sunan Abi Dawud Book 39, Hadith 47
← Previous Hadith The Messenger of Allah (ﷺ) said: The first defect that permeated Banu Isra'il was that a man (of them) met another man and said: O so-and-so, fear Allah, and abandon what you are doing, for it is not lawful for you. He then met him the next day and that did not prevent him from eating with him, drinking with him and sitting with him. When they did so. Allah mingled their hearts with each other.

He then recited the verse: "curses were pronounced on those among the children of Isra'il who rejected Faith, by the tongue of David and of Jesus the son of Mary"...up to "wrongdoers".

He then said: By no means, I swear by Allah, you must enjoin what is good and prohibit what is evil, prevent the wrongdoer, bend him into conformity with what is right, and restrict him to what is right.

Sunan Abi Dawud Book 39, Hadith 46 Next Hadith → You people recite this verse "You who believe, care for yourselves; he who goes astray cannot harm you when you are rightly-guided," and put it in its improper place.

Khalid's version has: We heard the Prophet (ﷺ) say: When the people see a wrongdoer and do not prevent him, Allah will soon punish them all. Amr ibn Hushaym's version has: I heard the Messenger of Allah (ﷺ) say: If acts of disobedience are done among any people and do not change them though the are able to do so, Allah will soon punish them all.

Adu Dawud said: This tradition has also been transmitted by Abu Usamah and a group transmitters similar to the version narrated by Khalid. The version of Shu'bah has: "If acts of obedience are done among any people who are more numerous than those who do them...."

Sunan Abi Dawud Book 39, Hadith 48