Abu Haazim Salamah Ibn Deenar:
Look at every act that you would hate to die while committing and then abandon it.
~Al-Musannaf|| AbdurRazaaq as-Sinani [7/194]
Hasan al-Basri (d.110 A.H.) said:
‘Statements cannot be correct except with actions; Statements and actions cannot be correct except with an intention; and statements, actions and an intention cannot be correct except according to the Sunnah.’
[From ‘Sharh Usool I’tiqaad Ahl-us-Sunnah’ al –Laalkaee 2/57]