7th Ayah from Surah 'Abasa
وَمَا عَلَيۡكَ أَلَّا يَزَّكَّىٰ ٧
Wa Mā `Alayka 'Allā Yazzakká
And not upon you [is any blame] if he will not be purified.
though you are not to be blamed for his lack of spiritual growth––
What does it matter to you if he will not become pure (from disbelief, you are only a Messenger, your duty is to convey the Message of Allah).
while there is no blame on you, if he does not attain purity.
Yet it is not thy concern if he grow not (in grace).
Though it is no blame to thee if he grow not (in spiritual understanding).