Quran

 2:2

ذَٰلِكَ الْكِتَابُ لَا رَيْبَ ۛ فِيهِ ۛ هُدًى لِلْمُتَّقِينَ ﴿٢﴾

2. This is the Book in which there is no doubt, guidance for the righteous.