33:70Al-Ahzaab

“Whoever believes in Allah and the Last Day, let him say something good, or else remain silent.”

“O you who believe! Have fear of Allah as is His due, and die not except as Muslims. (Then he said): ‘If a drop of Zaqqum were to be dropped on the earth, it would ruin the livelihood of the people of this world, so how about those who have no food other than it (i.e. Zaqqum)?’”

He who believes in Allah and the Last Day should either utter good words or better keep silence; and he who believes in Allah and the Last Day should treat his neighbour with kindness and he who believes in Allah and the Last Day should show hospitality to his guest.

“You have kinship and rights, and I see you entering upon these rulers and speaking to them as Allah wills you should speak. But i heard Bilal bin Harith Al-Muzani, the Companion of the Messenger of Allah (ﷺ), say that the Messenger of Allah (ﷺ) said: ‘One of you may speak a word that pleases Allah, and not know how far it reaches, but Allah will record for him as pleasure, until the Day of Resurrection due to that word. And one of you may speak a word that angers Allah, and not know how far it reaches, but Allah will record against him his anger, until the Day he meets Him due to that word.” 'Alqamah said: "So look, woe to you, at what you say and what you speak about, for there is something that I wanted to say but I refrained because of what I heard from Bilal bin Harith."

“No one of you should belittle himself.” They said: “O Messenger of Allah, how could anyone of us belittle himself?” He said: “If he sees something concerning which he should speak out for the sake of Allah but does not say anything. Allah will say to him on the Day of Resurrection: “What prevented you from speaking concerning such and such?” He will say: “Fear of the people.” (Allah) will say: “Rather you should have feared Me.”