What is meant by "Hell is sufficient for him"?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

There are two interpretations regarding the meaning of the phrase:

1. i.e. sufficient as retribution for his sin.
2. i.e. sufficient as humiliation to bring down his pride.