2. Al-Baqara "The Cow" — Ayah 256
لَآ إِكْرَاهَ فِى ٱلدِّينِ ۖ قَد تَّبَيَّنَ ٱلرُّشْدُ مِنَ ٱلْغَىِّ ۚ فَمَن يَكْفُرْ بِٱلطَّٰغُوتِ وَيُؤْمِنۢ بِٱللَّهِ فَقَدِ ٱسْتَمْسَكَ بِٱلْعُرْوَةِ ٱلْوُثْقَىٰ لَا ٱنفِصَامَ لَهَا ۗ وَٱللَّهُ سَمِيعٌ عَلِيمٌ
There shall be no compulsion in [acceptance of] the religion. The right course has become clear from the wrong. So whoever disbelieves in Taghut and believes in Allah has grasped the most trustworthy handhold with no break in it. And Allah is Hearing and Knowing.
Explanation

This verse, "No compulsion in religion," was revealed partly due to Ansar women vowing to raise children as Jews if they survived, and later not wanting to abandon them when Banu An-Nadir were expelled. While specific, its meaning is general: Islam is clear, requiring no force.

The core theological insight is that faith must be voluntary, stemming from inner conviction, not coercion. The "right path has become distinct from the wrong," meaning truth is evident, leaving no excuse for compulsion. Ibn Kathir emphasizes that forcing belief is futile if Allah has not guided one's heart.

The verse then introduces "Taghut," which scholars like 'Umar define as Shaytan, idols, or anything worshipped besides Allah. Disbelieving in Taghut and believing in Allah signifies embracing pure monotheism (Tawhid). This act is likened to grasping "the most trustworthy handhold (al-'urwat al-wuthqa)"—a metaphor for firm, unbreakable faith (Iman or Islam), as interpreted by Mujahid and As-Suddi. This imagery conveys stability and security in one's religious adherence. The verse thus establishes a fundamental principle of religious freedom and defines true faith as a conscious rejection of false deities and an unwavering commitment to Allah.

📚 Sources: Classical tafsir (multi-source)