Believe in the oneness of Allah and practice Islam according to its teachings.

This hadith is about the importance of believing in the oneness of Allah. It was narrated by 'Uthman ibn Affan that whoever dies knowing that there is no God but Allah will enter Paradise. This means that if a person has faith in the oneness of Allah, they will be rewarded with entrance into paradise after death. Believing in the oneness of Allah is an important part of Islamic faith and it is essential for Muslims to have this belief to be able to practice their religion properly. It also teaches us that we should strive to live our lives according to Islamic teachings so that we can receive this reward from Allah after death.