لِإِيلَافِ قُرَيْشٍ
Because of, or in view of, Quraysh’s accustomed security. (106:1)
One well-known syntactic analysis attaches the initial lām to fal-yaʿbudū: the favor supplies the motive for worship. Other analyses consider an implied governing expression or a relation to the preceding context. The conspicuous rhetorical connection is the movement from favor to grateful response.
The initial lām does not by itself establish a single indisputable ellipsis. Distinguish the passage’s clear communicative purpose from the particular syntactic reconstruction adopted by an interpreter.