Sayings of the Salaf

It is reported that ʿAbdullāh b. Al-Mubārak – Allāh have mercy on him – said:

The insightful and wise do not trust that they are safe from four things: a past sin about which it is not known what the Lord Almighty will do, the remaining lifespan wherein it is not known what destruction lies, some (apparent) advantage a person is given but which could be a lure (from Allāh) in recompense for his wrongdoing, a misguidance that has been beautified – so that he thinks it is guidance – and a momentary deviation of the heart, for a person can be stripped of his religion without realizing it.

Al-Dhahabī, Siyar Aʿlām Al-Nubalāʾ 8:406.

Anas b. Mālik reports:

A young man who had stolen was brought to ʿUmar (for punishment). He said, “By Allāh I have never stolen before this time.” So ʿUmar responded, “You lie, Allāh would not (or does not) surrender a servant of His on the first sin.”

Abū Dāwūd, Al-Zuhd article 56, and others. Graded ṣaḥīh by Ibn Kathīr and others.

Bilāl b. Saʿd – Allāh have mercy him – said:

When a sin is hidden it harms only the perpetrator, but if it is made apparent and not rectified, it harms all the people.

Ibn Waḍḍāḥ, Al-Bidʿah #287.