“Indeed, this Quran guides to what is most upright.” [al-Isrā’: 9]

And Allah Most High said:
“If they had done what they were admonished to do, it would have been better for them and would have strengthened them more firmly. * Then We would have granted them a great reward from Us, * and guided them to a straight path.” [al-Nisā’: 66–68]

And Allah Most High said:
“There has come to you from Allah a light and a clear Book. * Through it Allah guides those who pursue His pleasure to the ways of peace.” [al-Mā’idah: 15–16]

Abū Dharr said: “The Messenger of Allah, peace and blessings be upon him, passed away without leaving a single bird flapping its wings in the sky about which he had not imparted some knowledge to us.”

In Sahīh Muslim:
“Some polytheists said to Salmān, ‘Your Prophet has taught you everything, even how to relieve yourselves.’ He replied, ‘Yes.’”

And he, peace and blessings be upon him, said: “I have left you upon a clear path, whose night is like its day. No one will stray from it after me except one who is doomed.” And he said: