Qatada قتادة · The Book of the Sunnah

The Messenger of Allah (ﷺ) said: "Allah will continue to plant new people in this religion and use them in His obedience."

"When I narrate a Hadith from the Messenger of Allah (ﷺ), to you, then think of him as being the best, the most rightly guided and the one with the utmost Taqwa (piety, righteousness)"

"The Messenger of Allah (ﷺ) said: 'Allah will not accept any fasting, prayer, charity, Hajj, 'Umrah, Jihad, or any other obligatory or voluntary action from a person who follows innovation (Bid'ah). He comes out of Islam like a hair pulled out of dough."

"When 'Adi bin Hatim came to Kufah, we came to him with a delegation of the Fuqaha of Kufah and said to him: 'Tell us of something that you heard from the Messenger of Allah (ﷺ).' He said: 'I came to the Prophet (ﷺ) and he said: "O 'Adi bin Hatim, enter Islam and you will be safe." I said, "What is Islam?" He said: "To testify to La ilaha illallah (none has the right to be worshipped but Allah)…

"The Messenger of Allah (ﷺ) said: 'Nothing extends one's life span but righteousness, nothing averts the Divine Decree but supplication, and nothing deprives a man of provision but the sin that he commits.'"

"I said to 'Aishah: 'Which of the (Prophet's) Companions was most beloved to him?' She said: 'Abu Bakr.' I said: 'Then which of them?' She said: ''Umar.' I said: 'Then which of them?' She said: 'Abu 'Ubaidah.'"

"The Messenger of Allah said to me: 'The sign that you have been permitted to come in is that you raise the curtain and that you hear me speaking quietly, until I forbid you.' (i.e. unless I forbid you)."