What is required of the Muslim is to believe in all the books that were sent down from Allah, may He be exalted. So we believe in general terms in the books of which we do not know the details, without specifying their number, for Allah knows best about that. And we believe in the books that we know, according to what we know of their details from the texts of Revelation. As for the hadith mentioned, it does not have any reliable chain of narration (isnaad).

Muslims believe that there are levels in Jannah and that Allah has promised those who obey Him places to dwell in Paradise in return for their acts of obedience. The people of Paradise will vary in the bliss they enjoy in Paradise, according to the levels they attain. It is not possible for those who are in the lower levels of paradise to attain what is in the highest levels.