Surah 44. Ad-Dukhan, Ayah 7

Lit., "if you had but inner certainty". According to Abu Muslim al-Isfahani (as quoted by Razi), this means, "you would know it if you would but truly desire inner certainty and would pray for it".

Cf. ii. 4. They cannot fully realise what a tremendous thing it is that Allah is their own Lord and Cherisher (nex verse), as He is the Lord and Cherisher of the whole Universe, until they firmly believe,-until their Faith amounts to a certainty, secure and unshakable.