Sayyiduna Umar ibnil-Khattab Radiyallahu ae anhu narrates
that Rasullullah Sallallahu ae alaihi wasallam said:
Indeed, if you put your faith completely in
ALLAH, Subhanahu wa ta'ala,
as it ought to be,
then surely you will be provided sustenance
as birds are provided for.
They leave in the morning with their empty stomachs
and return in the evening duly filled.