The listener thinks Khalid and Amr jointly wrote it; only Khalid is asserted. Which kind of restriction is prominent?

Supplementary Practice 5: Textual Analysis, Scope of Meaning and Rhetorical Judgment

• Qaṣr al-ifrād: exclusion of partnership
• Qaṣr al-qalb in every case, replacing one individual with another
• Qaṣr of identification without excluding a rival
• Relative restriction is impossible