The book adds several further examples.
Zakat: ownership of the legally relevant nisab, together with applicable conditions.
Hajj: the conditions governing ability and obligation in relation to the Sacred House.
Sadaqat al-fitr: the text notes responsibility related to persons one maintains and has authority over.
Ushr and kharaj: land and its relevant production or legal status.
These are the author’s classificatory examples. An actual ruling on a person’s liability requires all its conditions and impediments to be checked.