(1)
Abu Sa'id and Abu Hurairah (RAA) narrated that the messenger of Allah (ﷺ) said:
"Remind those who are on their death bed of the Shahadah "La'Ilaha illall-ah." (for them to say it, hoping it will be their last words)" (PT)
Reference (PT): Bulugh al-Maram 535, 536 (PT)
In-book reference (PT): Book 3, Hadith 4 (PT)
English translation (PT): Book 3, Hadith 560 (PT)