Consider Ayat 26,Surat Yunus.

[Abu Hafsat]

As-Salaam alaikum, 

Verse/ayat 26 of chapter 10 of the Holy Qur'an reads:--

"Lillazina ahsanu-l-husna, Wa ziyadat.. For those who do good is the best (reward) and an addition." (10:26)

The authentic hadith mention (Muslim No. 181-449 and Ibn Majah No. 187) that the Prophet, Sallallahu alaihi Wasallam, said :

"When the people of Paradise enter paradise a caller will announce, 'People of Paradise, Allah has given you a promise which He wishes to fulfil.' They will say, 'What is that? Has He not made our faces white? Has He not made our scales heavy? Has He not granted us entry into Paradise and saved us from the Fire?' 

So He will remove the veil and they will look on at Him and by Allah, He will not have granted them anything more blessed to them than this, and there will be nothing that gives  more pleasure to their eyes than this! This is the addition. " 

The he, Sallallahu alaihi Wasallam, recited the above quoted ayat.