How do “lakum” and “ḥayāh” work together?

Musāwāt and Ījāz al-Qaṣr: Proportionate Wording and the Rhetoric of Qiṣāṣ

• The first is negation and the second prohibition
• Both are objects of the same verb
• Both are merely temporal qualifications
• The first identifies the beneficiaries; the second conveys the great benefit