Ka'b b. Malik reported God’s messenger as saying,“If anyone seeks knowledge to use it in vying with the learned, or disputing with the foolish, or to attract men’s attention to himself, God will bring him into hell.”Tirmidhi transmitted it.

And Ibn Majah transmitted it from Ibn ‘Umar.

Abu Huraira reported God’s messenger as saying,“If anyone acquires knowledge of things by which God’s good pleasure is sought, but acquires it only to get some worldly advantage, he will not experience the ‘arf, i.e. the odour, of paradise on the day of resurrection.”Ahmad, Abu Dawud and Ibn Majah transmitted it.

Ibn Mas'ud reported God’s messenger as saying,“God brighten a man who hears what I say, gets it by heart, retains it, and passes it on to others! Many a bearer of knowledge is not versed in it, and many a bearer of knowledge conveys it to one who is more versed than he is. There are three things on account of which no rancour enters a Muslim's heart:sincere action for God’s sake, good counsel to Muslims, and hold- ing fast to their community, for their invitation includes those who are beyond them.”Shafi‘i transmitted it, also Baihaqi in al-Madkhal.

Ahmad, Tirmidhi, Abu Dawud, Ibn Majah and Darimi transmitted it from Zaid b. Thabit, but Tirmidhi and Abu Dawud did not mention,“There are three things on account of which no rancour enters..." to the end.

Ibn Mas'ud said that he heard God’s messenger saying,“God brighten a man who hears something from us and conveys it to others as he heard it, for many a one to whom it is brought retains it better than the one who heard it.”Tirmidhi and Ibn Majah transmitted it,

and Darimi transmitted it from Abu Darda'.

Ibn ‘Abbas reported God’s messenger as saying,“Be on your guard about tradition from me, except what you know; for he who lies about me deliberately will certainly come to his abode in hell.”Tirmidhi transmitted it,

and Ibn Majah transmitted it from Ibn Mas'ud and Jabir, but did not mention,“ Be on your guard about tradition from me, except what you know.”

Ibn ‘Abbas reported God’s messenger as saying,“Let him who interprets the Qur’an in the light of his opinion come to his abode in hell.”A version has,“Let him who interprets the Qur’an without knowledge come to his abode in hell.”Tirmidhi transmitted it.