Sallaam Bin Abee Mutee (rahimahullaah) said: Saeed Bin Iyyaas Al-Jurooree (rahimahullaah) who was from the Mashaayikh of Basra came to us after returning from hajj. So he started saying: Allaah gave us such and such good on our journey! Allaah gave us such and such on our journey! Then he said: it used to be said that counting the blessings (Allaah has given you) is a sign of gratefulness.
[Hilyatul Awliyaa 6/200]