Clue: Clue: the pastern's broken, but this horse won with certainty; it's better than gambling (1,4,2,3,4,2,5,3,2,3,4)
Answer: A BIRD IN THE HAND IS WORTH TWO IN THE BUSH
Explanation: Definition: certainty; it's better than gambling
A BIRD IN THE HAND would be a "Clue" for "the pas**tern**'s", as **tern**=A BIRD, put IN the pass=THE HAND, with pass=HAND something over…
 …plus IS WORTH TWO IN THE BUSH=(but this horse won with)