Shaykh Fawzān was asked about calamities which afflict the Muslim.
Noble Shaykh – May Allāh give you success – this questioner says,
How does a Muslim discern if a calamity that occurred to him, is due to his sins or a test from Allāh (The Mighty & Majestic)?
It is because of his sins, as Allāh said:
وَمَا أَصَابَكُم مِن مُّصِيبَةٍ فَبِمَا كَسَبَتْ أَيْدِيكُمْ
And whatever of misfortune befalls you, it is because of what your hands have earned. (Ash-Shūra: 30)
And is there anyone who is free from sin?! Nobody is faultless; however the door of repentance is open, Alhamdulillāh.
Sharh Ighāfati al-Lahfān min Masā’id ash-Shaytān 18/05/1439