Ibn al-Qayyim رحمه الله:

“A year is like a tree, the months are its boughs, the days are its branches, the hours are its leaves, and its breath is its fruit.

Whoever’s breath used to obey Allāh, the fruit of his tree will be good and pure. Whoever’s breath used to disobey Allāh, his fruit will be evil.

The time of harvest is on the Day of Resurrection, and at that time the fruit will be shown, whether it is sweet or sour.”

[al-Fawā’id]