The people of Yemen used to come for Hajj and used not to bring enough provisions with them and
used to say that they depend on Allah. On their arrival in Medina they used to beg the people, and so
Allah revealed, "And take a provision (with you) for the journey, but the best provision is the fear of
Allah." (2.197).
Sahih al-Bukhari Book 25, Hadith 11