Halliday & Matthiessen (2004: 460):
The parallel between quoting and reporting is not so close with proposals as with propositions, because reported proposals merge gradually into causatives without any clear line in between. Thus not only are there many verbs used in quoting which are not used in reporting … but also there are many verbs used to report that are not used to quote, verbs expressing a wide variety of rhetorical processes such as persuade, forbid, undertake, encourage, recommend …