Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:

لايَجدُ عَبدٌ طعمَ الإيمانِ حتّى يَعلمَ أنَّ ما أصابَهُ لم يكُن لِيُخطِئَهُ، وَأنَّ ما أخطأهُ لم يكُن ليُصيبَهُ، وَأنَّ الضّارَّ النّافِعَ هوَ اللَّهُ عزّ وجلّ.

'A servant will never savour the taste of faith until he knows that that which afflicts him would never have missed him, and that that which has missed him would never have touched him, and that the only One to induce harm and benefit is Allah, Mighty and Exalted.

Source: al-Kafi, v. 2, p. 58, no. 7