In Standard English (StdE), the verb clarify is a transitive verb, meaning that it has the pattern ‘someone clarifies something’, or Subject-Verb-Object.
In Singapore English (SgE), however, clarify is usually intransitive, meaning it does not take an object. We see this very clearly in the above example, taken from a letter explaining overcrowding on the trains:
We hope this clarifies, and thank Dr Lim for his feedback.
In StdE, the first half of the sentence might have read: We hope this clarifies the matter.