Sayyiduna Abu Hurairah (RadhiAllaho anho) narrates
that Rasulullah (Sallallahu Alaihi Wasallam) said:

I Say;

Subhanallah
(Glory be to Allah Who is above all faults)

Alhamdulillah
(Praise be to Allah)

La ilaha illallah
(There is none worthy of worship except Allah)

Allahu Akbar
(Allah is the Greatest),

is dearer to me than everything
on which the sun rises.

{ Muslim }