«قليلاً ... قليلها»
A little time, and the little that belongs to that time.
In the cited poem about a short pause, qalīlan occurs at the beginning of the second hemistich, while qalīluhā closes it. Both preserve the lexical sense of smallness, with the second form adding a pronoun.
The placement is second hemistich opening → ending, supported by a root-related verbal connection. Grammatical interpretation is needed alongside the phonetic echo.