It is narrated from Sayyiduna Abu Bakrah (may Allah be pleased with him); he said that the Messenger of Allah (peace and blessings be upon him) said: "There is no sin more deserving that Allah Almighty should hasten the punishment of its doer in this world, along with what is stored up for him in the Hereafter, than transgression (oppression and wrongdoing) and severing the ties of kinship (breaking off relations with relatives)." The chain of this hadith is sahih (authentic), and the two Shaykhs did not record it.