It wasnarrated that Abu Sa'eed Al-Khudri said:
"The Messenger ofAllah(ﷺ) said: 'Urge your dying ones to say: "La ilaha illallah." (JA)
English reference (JA): Vol. 1, Book 6, Hadith 1445 (JA)
Arabic reference (JA): Book 6, Hadith 1512 (JA)