The Holy Quran 29:3 — Surah Al-'Ankabut

Arabic text

وَلَقَدْ فَتَنَّا ٱلَّذِينَ مِن قَبْلِهِمْ ۖ فَلَيَعْلَمَنَّ ٱللَّهُ ٱلَّذِينَ صَدَقُوا۟ وَلَيَعْلَمَنَّ ٱلْكَـٰذِبِينَ

Translation

We certainly tested those (Mu'mineen) before them, and (by putting people through tests) Allaah will definitely (make people) know those who are true (in their Imaan) and He will definitely (make people) know who the liars are (whose Imaan in not sincere).

Tafsir (excerpt) — Tafsir Usmani

The trial and testing of earlier peoples: that is, the followers of earlier prophets have already been put through great and severe trials. It is related in al-Bukhari that the Companions ﵃ once complained to [the Prophet ﷺ]: “O Messenger of Allah ﷺ! Ask Almighty Allah to help us and pray [for us].

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