It was narrated from Abu Bakrah that the Messenger of Allah (ﷺ) said: “There is no sin more deserving that Allah hasten the punishment in this world, in addition to what is stored up for him in the Hereafter – than injustice and severing the ties of kinship.”
It was narrated from ‘Aishah, the Mother of the Believers, that the Messenger of Allah (ﷺ) said: “The most quickly rewarded of good deeds are kindness and upholding the ties of kinship, and the most quickly punished evil deeds are injustice and severing the ties of kinship.”
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said: “It is sufficient evil for a man to look down on his Muslim brother.”
It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) said: “Allah has revealed to me that you should be humble towards one another and should not wrong one another.”