The Holy Quran 6:88 — Surah Al-An'am

Arabic text

ذَٰلِكَ هُدَى ٱللَّهِ يَهْدِى بِهِۦ مَن يَشَآءُ مِنْ عِبَادِهِۦ ۚ وَلَوْ أَشْرَكُوا۟ لَحَبِطَ عَنْهُم مَّا كَانُوا۟ يَعْمَلُونَ

Translation

This (Deen of Islaam to which Allaah guided them) is Allaah's guidance by which He guides whom He wills from His bondsmen. If (it is assumed that) they commit Shirk, then all their actions will be destroyed (because Shirk cannot be tolerated).

Tafsir (excerpt) — Tafsir Usmani

that is, the path of pure tawhid (monotheism) and of knowing and obeying Allah is the very path on which Almighty Allah, by His grace and enabling, leads His accepted servants, and then in reward for it raises their ranks according to their capacity. this has been announced to us: shirk (associating partners with Allah) nullifies all of a person's deeds.

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