Q72: If the phrase 'rights of publication are reserved to the author or publisher' is written on some publications, is it obligatory to abide by the content of this phrase? And with the supposition that it is mandatory, is it permissible to print them (publications) if public welfare or religious betterment depends on it?
A: Abiding by it (the phrase) is not obligatory, but it is preferable to seek permission, especially from the author. God knows best. (MMS, p. 28, Q55)