It was narrated from Ibn 'Abbas that: The Prophet (ﷺ) said: "There will be some people among my Ummah (nation) who will gain knowledge of the religion, and they will recite Qur'an, and will say: 'We come to the rulers so that we may have some share of their worldly wealth, and we will make sure that our religious commitment is not affected,' but that will not be the case. Just as nothing can be harvested from the Qatad except thorns, so nothing can be gained from being close to them except (sins).'" (Da'if)(One of the narrators) Muhammed bin As-Sabbah said: "It is as if he meant, 'except sins'."

It was narrated that Abu Hurairah said: "The Messenger of Allah (ﷺ) said: 'Seek refuge with Allah from the pit of grief.' They said: 'O Messenger of Allah, what is the pit of grief?' He said: 'A valley in Hell from which Hell itself seeks refuge four hundred times each day.' It was said: 'O Messenger of Allah, who will enter it?' He said: 'It has been prepared for reciters of the Qur'an who want to show off their deeds. The most hateful of reciters of the Qur'an to Allah are those who visit the rulers.'" (Da'if) Other chains of narrators.

It was narrated that 'Abdullah bin Mas'ud said: "If the people of knowledge had taken care of it and presented it only to those who cared for it, they would have become the leaders of their age by virtue of that. But they squandered it on the people of wealth and status in this world in order to gain some worldly benefit, so the people of wealth and status began to look down on them. I heard your Prophet say: 'Whoever focuses all his concerns on one issue, the concerns of the Hereafter, Allah will suffice him and spare him the worries of this world. But whoever wanders off in concern over different worldly issues, Allah will not care in which of these valleys he is destroyed.'" (Da'if) Another chain with similar wording.

It was narrated from Abu Hurairah that: The Prophet (ﷺ) said: "There is no man who memorizes knowledge then conceals it, but he will be brought forth on the Day of Resurrection bridled with reins of fire." (Hasan) Another chain with similar wording.

It was narrated that 'Abdur-Rahman bin Hurmuz Al-A'raj heard Abu Hurairah say: "By Allah, were it not for two Verses in the Book of Allah, I would never have narrated anything from him, meaning from the Prophet, were it not for the Words of Allah: Verily, those who conceal what Allah has sent down of the Book, and purchase a small gain therewith (of worldly things), they eat into their bellies nothing but fire. Allah will not speak to them on the Day of Resurrection, nor purify them, and theirs will be a painful torment. Those are they who have purchased error at the price of guidance, and torment at the price of forgiveness. So how bold they are (for evil deeds which will push them) to the Fire.'"

It was narrated that Jabir said: "The Messenger of Allah (ﷺ) said: 'When the last people of this Ummah curse the first, (at that time) whoever conceals a Hadith will be concealing what Allah has revealed.'" (Maudu')