Saeed bin Musayab reported,

When Abu Talib was on his deathbed, the Messenger of Allah ﷺ came to him and said, "Say, 'There is no god but Allah,' a word by which I may plead on your behalf before Allah."

Bukhari 6681

Sahih

حدثنا أبو اليمان أخبرنا شعيب عن الزهري قال أخبرني

سعيد بن المسيب عن أبيه قال

لما حضرت أبا طالب الوفاة جاءه رسول الله ﷺ فقال قل لا إله إلا الله كلمة أحاج لك بها عند الله

البخاري 6681صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Oaths and vows
Chapter
If one says "By Allah, I will not speak today," then prays or recites or glorifies or magnifies or praises Allah or declares His oneness, he is upon his intention
Numbering
Darussalam 6681
Bukhari 6681