(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)" (AR)
Reference (AR): Bulugh al-Maram 535, 536 (AR)
In-book reference (AR): Book 3, Hadith 4 (AR)
English translation (AR): Book 3, Hadith 560 (AR)