Abdullah bin Masud reported,

Your Prophet ﷺ was given the keys to everything except five things, "Indeed, Allah has knowledge of the Hour and sends down the rain and knows what is in the wombs. And no soul perceives what it will earn tomorrow, and no soul perceives in what land it will die. Indeed, Allah is Knowing and Acquainted." [Luqman 31:34]

Azami 13013

Hasan

عن عبد الله بن مسعود

أوتي نبيكم ﷺ مفاتيح كل شيء غير خمس: {إن الله عنده علم الساعة وينزل الغيث ويعلم ما في الأرحام وما تدري نفس ماذا تكسب غدا وما تدري نفس بأي أرض تموت إن الله عليم خبير}

الأعظمي 13013حسن
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Luqman
Section
His saying, "And do not turn your cheek away from people and do not walk upon the earth exultantly. Indeed, Allah does not like everyone self-deluded and boastful. And be moderate in your pace and lower your voice. Indeed, the most disagreeable of sounds is the voice of donkeys."
Numbering
Jami al-Kamil 13013 (2nd edition)
Azami 13013