A poet takes only an idea in one case but a full earlier hemistich in another. What is the correct contrast?

Iqtibās and Taḍmīn: Quoting Scripture and Incorporating Poetry

• First iqtibās, second ṭibāq
• First taḍmīn, second ilmām
• Both are solely tajrīd
• First ilmām, second taḍmīn