Anas binMalik narrated the Messenger of Allah (ﷺ) said:
"This isthe sonof Adam, and this is his life span at his neck,' then hespread hishand in front of him and said: 'And there is his hope." (JA)
English reference (JA): Vol. 5, Book 37, Hadith 4232 (JA)
Arabic reference (JA): Book 37, Hadith 4373 (JA)