That is the (Holy) Book, where there is no doubt. It is a guidance for the cautious (of evil and Hell).
2:3
Who believe in the unseen and establish the (daily) prayer; who spend out of what We have provided them.
2:4
Who believe in that which has been sent down to you (Prophet Muhammad) and what has been sent down before you (to Prophets Jesus and Moses) and firmly believe in the Everlasting Life.
2:5
These are guided by their Lord; these surely are the prosperous.