ʿIndī and ladayya often translate similarly, yet the source assigns a narrower presence implication to ladā/ladun; they should not be treated as exact synonyms in every grammatical discussion.
Additional example: الْكِتَابُ عِنْدِي.
The book is with me.
Al-kitābu: subject; ʿinda: accusative place adverb and muḍāf; -ī: genitive complement; phrase functions as predicate.
Additional example: الْكِتَابُ لَدَيَّ.
The book is here with me.
Al-kitābu: subject; ladayya: place adverb linked to first-person suffix; phrase serves as predicate.