5:78Al-Maaida

“When the Children of Isral became deficient in religious commitment, a man would see his brother committing sin and would tell him not to do it, but the next day, what he had seen him do did not prevent him from eating or drinking with him, or mixing with him. So Allah made the hearts of those who did not commit sin like the hearts of those who did, and He revealed Qur’an concerning them and said: “Those among the Children of Israel who disbelieved were cursed by the tongue of David and ‘Eisa, son of Maryam” until he reached: “And had they believed in Allah, and in the Prophet and in what has been revealed to him, never would they have taken them (the disbelievers) as their friends; but many of them are disobedient (to Allah).” The Messenger of Allah (ﷺ) sat up and said: "No, not until they take the hand of the wrongdoer (i.e. restrain him] and force him to follow the right way."

"The Messenger of Allah (ﷺ) said: 'When the Children of Isra'il fell into disobedience, their scholars forbade them from it. But they did not stop, so they sat with them in their gatherings, and participated in eating and drinking with them. So Allah pitted their hearts against each other, and cursed them upon the tongue of Dawud and 'Eisa bin Mariam. That was because they disobeyed and were ever transgressing.'" He said: "The Messenger of Allah (ﷺ) sat up after he had been reclining, and he said: 'No, by the One in Whose Hand is my soul! Not until you incline them to the truth.'" 'Abdullah bin 'Abdur-Rahman said: "Yazid said: 'Sufyan Ath-Thawri would not say in it: "From 'Abdullah."

"The Messenger of Allah (ﷺ) said: 'When the Children of Isra'il fell into decline, a man among them would see his brother committing a sin, and prohibit them from it. The next day, what he saw him doing would not prevent him from eating with him, drinking with him, and associating with him. So Allah pitted their hearts against each other, and He revealed about them in the Qur'an, He said: Those among the Children of Isra'il who disbelieved were cursed by the tongue of Dawud and 'Eisa, son of Mariam. That was because they disobeyed and were ever transgressing.' And he recited until he reached: 'And had they believed in Allah, and in the Prophet, and in what has been revealed to him, never would they have taken them as friends; but many of them are rebellious (5:78-81).' He said: "And Allah's Prophet (ﷺ) was reclining, so he sat up and said: 'No! Not until you take the hand of the wrong-doer and incline him toward the truth.'"

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.

" cursing of unbelievers got a sanctions.