Tafsir of Sad 38:7

ما سمعنا بهذا في الملة اﻻخرة

We have not heard (the like) of this in the religion of these later days. means, `we have not heard anything like this Tawhid to which Muhammad calls us in the religion of these later days.' Al-`Awfi reported that Ibn Abbas, may Allah be pleased with him, said, "We have not heard of this from the religion of these later days (meaning Christianity); if this Qur'an were true, the Christians would have told us about it.''

إن هذا إﻻ اختﻼق

This is nothing but an invention! Mujahid and Qatadah said, "A lie.'' Ibn Abbas said, "A fabrication.''