Mother married twice running - it's the money that's tempting (6)
I believe the answer is:
mammon
'the money that's tempting' is the definition.
I can't judge whether this defines the answer.
'mother married twice running' is the wordplay.
'mother' becomes 'ma' (ma can mean mother).
'married' becomes 'm'.
'twice' shows that letters should be duplicated.
'running' becomes 'on' (eg when a machine is running it is on).
'm' doubled is 'mm'.
'ma'+'mm'+'on'='MAMMON'
'it's' is the link.
Can you help me to learn more?
(Other definitions for mammon that I've seen before include "Bible 'You cannot serve God and . . . . . .'" , "money" , "Wealth (worshipped)" , "Greed personified" , "Wealth as an object of worship" .)