وكذلك أوحينا إليك روحا من أمرنا
And thus We have sent to you Ruh of Our command.
means, the Qur'an.
ما كنت تدري ما الكتاب وﻻ اﻻيمان
You knew not what is the Book, nor what is Faith.
means, `in the details which were given to you in the Qur'an.'
ولكن جعلناه
But We have made it,
means, the Qur'an,
نورا نهدي به من نشاء من عبادنا
a light wherewith We guide whosoever of Our servants We will.
This is like the Ayah:
قل هو للذين ءامنوا هدى وشفاء والذين ﻻ يومنون فى ءاذانهم وقر وهو عليهم عمى
Say:
"It is for those who believe, a guide and a healing. And as for those who disbelieve, there is heaviness (deafness) in their ears, and it (the Qur'an) is blindness for them.'' (41:44)
وإنك
And verily, you, (means, O Muhammad),
لتهدي إلى صراط مستقيم
are indeed guiding to a straight path.
means, the correct behavior.
Then Allah explains this further by saying: