If you have not completed the assigned reading for a class, is it Gineivas Das to still participate in class conversation about the reading? (For example, you are still able to make valuable comments despite not having read it.)
(Participation contributes to your final grade in the class.)
Presumably, people understand it is possible to make valuable comments even without reading the book, and hence it would not be gneivas daas. However this does not mean you can lie about having completed the reading, if you are asked if you read it.