On the authority of Ubai bin Ka`b (may Allah be pleased with him) who reported that the Messenger of Allah (peace be upon him) said:
Abu Al-Mundhir! Do you know which verse of Allah's Book is the greatest to you?
I replied: 'Allah, there is no god but He, the Living, the Eternal.' He struck me on my breast and said:
Let the knowledge be delighted with you, Abu Al-Mundhir!
1. This hadith implies that some parts of the Qur'an are preferred over others. The verse of Al-Kursi [the Divine Throne] is deemed the best because of its contents.
2. It is permitted to praise a person in his presence provided this may not lead to his arrogance.
This Hadith was copied from