لَا تَمْسَحْ وَأَنْتَ تُصَلِّي، فَإِنْ كُنْتَ لَا بُدَّ فَاعِلًا فَوَاحِدَةً
Meaning: Do not brush the ground during prayer; if unavoidable, do it once.
The narration from Mu‘ayqib supports the distinction between necessity and repetitive adjustment.