Ubayy bin Kaab reported,

The last part of the Quran to be revealed was "There has certainly come to you a Messenger from among yourselves. Grievous to him is your suffering. He is deeply concerned for you, and toward the believers he is kind and merciful" [Tawbah 9:128].

Azami 661

Sahih

عن أبي بن كعب، قال

آخر ما نزل من القرآن: {لقد جاءكم رسول من أنفسكم عزيز عليه ما عنتم حريص عليكم بالمؤمنين رءوف رحيم} ١٢٨ [سورة التوبة: ١٢٨].

الأعظمي 661صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Belief in the scriptures sent down from Allah عز وجل
Section
Last of what was revealed from the Quran
Numbering
Jami al-Kamil 661 (2nd edition)
Azami 661