(1)
Abu Hurairah (RAA) narrated that the Messenger of Allah said:
"Remember, as much as you can, the one thing (fact or reality) which (always) brings an end to all worldly joys and pleasures, (meaning death)"Related by At-Tirmidhi, An-Nasa'i and Ibn Hibban. (ID)
Reference (ID): Bulugh al-Maram 532 (ID)
In-book reference (ID): Book 3, Hadith 1 (ID)
English translation (ID): Book 3, Hadith 557 (ID)