Do not expose yourself to what does not concern you, stay away from your enemy, beware of [taking as] your friend anyone except the trustworthy amongst people – and there is no one who is trustworthy except one who fears Allāh; and do not accompany the sinner in case you learn his sinfulness, and do not let him know your secrets, and consult those who fear Allāh for your affairs.
Ibn Abī Shaybah, Al-Muṣannaf 34476.
A man does not become noble until he has two qualities: he is undesirous of what other people possess, and he pardons and overlooks them.
Ibn Ḥibbān, Rawḍatu Al-ʿUqalāʾ p167
A man remains upon good as long as he knows what things spoil his deeds.
Aḥmad b. Ḥanbal, Al-Zuhd p339.
Do not be from those who are hasty, who broadcast (what should not be broadcast), who plant trouble by divulging what should be secret, for you will face severe, prolonged and heavy tribulations.
Al-Bukhārī, Al-Adab Al-Mufrad no. 327. Its chain of transmission was graded ṣaḥīḥ by Al-Albānī in Ṣaḥīḥ Al-Adab Al-Mufrad no.250.
The victim of theft might continue to suspect and conjecture [about who stole from him] until he becomes worse [in sin] than the thief.
Al-Bukhārī, Al-Adab Al-Mufrad no. 1289. Its chain of transmission was graded ṣaḥīḥ by Al-Albānī in Ṣaḥīḥ Al-Adab Al-Mufrad no.974.
There are three things that I like for myself and for my brothers: That the Muslim man looks to the Qurān; he learns it, recites it, ponders it and refers to it. Second, that he looks to the narrations and the Sunnah; he asks about it and follows it with all his efforts. Third, that he leaves alone all these people except when doing good.
Al-Bukhāri, Al-Ṣaḥīḥ, no. 97 (in annotative, discontiguous form). The chain of transmission is connected in Al-Marwazī, Al-Sunnah, no. 108.
A man once came to ʿAbdullāh [ibn Masʿūd] – Allāh be pleased with him – and said, “We were once travelling when we met another group of travellers, so we asked them, ‘Who are you?’ They replied, ‘We are the believers!'” So [Ibn Masʿūd] said, “So why didn’t they just say, ‘We are from the people of Jannah?!'”
Abū ʿUbayd Al-Qāsim b. Sallām, Kitāb Al-Īmān, article 11. Shaykh Al-Albānī graded the chain of transmission of this and the following narration ṣaḥīḥ according to the standard of Bukhārī and Muslim.
A brother who, whenever you meet him, points out to you one of your faults (for you to correct yourself) is better for you than a brother who, whenever you meet him, puts a dīnār (money) in your hand.
Abū Bakr Al-Daynūrī, Al-Mujālasah wa Jawāhir Al-ʿIlm no. 1428.
Beware of lying, for lying is far removed from īmān.
Abū Bakr Al-Ḵallāl, Al-Sunnah no. 1467, 1470; Al-Bayhaqī, Shuʿab Al-Īmān no. 4463.
Do not be with the sinner (fājir), for he will beautify to you the things he does, and he will want you to be like him; and he will beautify to you the worst of his practices; and his entrance upon you and leaving from your company will cause ignominy and discredit [of you]. And do not accompany the fool (aḥmaq), for he will exhaust himself [to help you] but will not benefit you, and he may want to benefit you but end up harming you; his silence is better than his speaking, his distance is better than his closeness, and him dying is better than him living. And do not accompany the liar, for life will not benefit you with him, he will tell others what you say, and tell you what others say; and if you speak the truth, it will not be believed.
Abū Bakr Al-Daynūrī, Al-Mujālasah wa Jawāhir AlʿIlm no. 1379.