Riyad as-Salihin 578
Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "Remember more often the destroyer of pleasures - death." [At-Tirmidhi, who classified it as Hadith Hasan] .
وعنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ “أكثروا ذكر هاذم اللذات” ‏(‏‏(‏يعنى الموت‏)‏‏)‏ ‏(‏‏(‏رواه الترمذى وقال‏:‏ حدث حسن‏)‏‏)‏‏.‏