Ruth ends in love for money? Beast! (5)
I believe the answer is:
rhino
'money? beast' is the definition.
'rhino' can be an answer for 'beast' (I've seen this before). I'm not certain of the 'money?' bit.
'ruth ends in love' is the wordplay.
'ends' suggests removing the centre.
'love' becomes 'o' (love means zero in tennis).
'ruth' with its centre removed is 'rh'.
'rh'+'in'+'o'='RHINO'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for rhino that I've seen before include "Horned pachyderm" , "Large animal with a horn on its snout, in short" , "chargeable > 11 [LOLLY]?" , "greens" , "wild beast" .)