Hadeeth of Thawbaan from the Prophet (sallallaahu ’alayhi wa sallam) that he said, "nothing but supplication averts the decree and nothing but righteousness increases the life-span. Indeed a person is deprived of provision due to performing sins."
[Mishkaat al-Masaabeeh [Eng. Trans. 2/1026]. Reported by Ahmad [5/277, 280], ibn Maajah [chpt. 10, no.90], al-Haakim [1/493], ibn Abee Shaybah [10/441], ibn Hibbaan [no. 1090], al-Baghawee [6/13] and al-Qudaa`ee [no. 831].