This is split ergativity
Object agreement appears only in the perfective transitive.
💬 Examples
राम किताब पढ़ता है
rām kitāb paṛhtā hai
Ram reads the book
📝 Present: agrees with the SUBJECT राम (m)
राम ने किताब पढ़ी
rām ne kitāb paṛhī
Ram read the book
📝 Past: agrees with the OBJECT किताब (f)