### Clue: Sold out through saying "If it can go wrong, it will" (4,3)
### Answer: SOD’S LAW 
 ### Explanation: Definition: "If it can go wrong, it will"
 **Anagram of**(… out) SOLD **contained in**(through) SAW(a saying;an adage).
Defn: Saying that's also attributed to Murphy.