Tolerant eastern province in time of fasting (7)
I believe the answer is:
lenient
'tolerant' is the definition.
('lenient' can be a synonym of 'tolerant')
'eastern province in time of fasting' is the wordplay.
'eastern' becomes 'e'.
'province' becomes 'ni' (I've seen this in other clues).
'in' indicates putting letters inside.
'time of fasting' becomes 'lent' (I've seen this before).
'e'+'ni'='eni'
'eni' put into 'lent' is 'LENIENT'.
(Other definitions for lenient that I've seen before include "Light" , "Clement" , "Merciful or easygoing" , "Forgiving, soft" , "Tolerant, merciful" .)