“I heard Amīr al-Muʾminīn (a) say, ‘The Messenger of Allah (ṣ) said, “Verily Allah has forbidden Paradise to every foul-mouthed, obscene, shameless person who does not care about what he utters and what is said to him. If you investigate him, you will not find him but of illegitimate birth or a partner of Satan.” Upon hearing this, one man asked, “O Messenger of Allah, are there really people who are partners of Satan?” He (ṣ) replied, “Have you not read the statement of Allah [where he tells Satan]: And partner with them in their wealth and children (Q17:64)?” Then someone asked, “And are there [really] some people who do not care about what they utter or what is said to them?” So he (ṣ) responded, “Yes. He who criticizes the people and speaks [negatively] about them while he knows that they will not leave him [and will react against what he has said]; such a person does not care about what he utters and what is said to him.”’”