وَهَذَا لُغَةُ أَهْلِ الْحِجَازِ، وَأَمَّا بَنُو تَمِيمٍ فَلَا يُعْمِلُونَهُمَا أَصْلًا.
Translation: This is the usage of the people of the Hijaz; Banū Tamīm, however, do not give these two particles governing force at all.
The author reports two classical dialectal practices. They differ in case government without changing the basic negative meaning.