Sahih Bukhari | Volume 9 | Hadith Number 341

Narrated by Sa'd bin Ubaid
(The Maula of 'Abdur-Rahman bin Azhar) Allah's Apostle said, "None of you should long for death, for if he is a good man, he may increase his good deeds, and if he is an evil- doer, he may stop the evil deeds and repent."