وَقَلَّ أَيْ جَازَ عَلَى قِلَّةٍ تَقْدِيمُهُمَا
Advancing the exclusive element along with illā is permissible, but uncommon.
Examples of early exception placement illustrate a less frequent construction. First read the case endings correctly, then determine which participant is restricted.
Uncommon is not synonymous with ungrammatical; it means that the pattern should not be treated as the standard arrangement.