Iqtibās incorporates Qur'anic or hadith wording in an appropriate literary setting. Taḍmīn inserts all or part of another poet's verse into one's own composition. The discussion of literary borrowing distinguishes wording, meaning, arrangement, and claims of authorship.
Acknowledging a recognizable line is different from presenting it as one's own invention. A rigorous analysis considers the source wording, the extent of alteration, and the question of attribution; sharing a general idea alone is not enough.