Al-A'raf - 7:2

كِتَابٌ أُنزِلَ إِلَيْكَ فَلاَ يَكُن فِي صَدْرِكَ حَرَجٌ مِّنْهُ لِتُنذِرَ بِهِ وَذِكْرَى لِلْمُؤْمِنِينَ
[7:2]
A Book revealed to you-- so let there be no straitness in your breast on account of it-- that you may warn thereby, and a reminder close to the believers.
A Book revealed unto thee,- So let thy heart be oppressed no more by any difficulty on that account,- that with it thou mightest warn (the erring) and teach the Believers).
(It is) a Scripture that is revealed unto thee (Muhammad) - so let there be no heaviness in thy heart therefrom - that thou mayst warn thereby, and (it is) a Reminder unto believers.