Abdullah bin Umar reported,

The Messenger of Allah ﷺ said, "The keys of the unseen are five, which none knows except Allah. No one knows what will happen tomorrow, no one knows what is in the wombs, no soul knows what it will earn tomorrow, no soul knows in what land it will die, and no one knows when the rain will come."

Azami 13010

Sahih

عن ابن عمر قال

قال رسول الله ﷺ: مفتاح الغيب خمس لا يعلمها إلا الله: لا يعلم أحد ما يكون في غد، ولا يعلم أحد ما يكون في الأرحام، ولا تعلم نفس ماذا تكسب غدا، وما تدري نفس بأي أرض تموت، وما يدري أحد متى يجيء المطر.

الأعظمي 13010صحيح
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 13010 (2nd edition)
Azami 13010