ArabicMeaningRole in the imageمَحْفُوفEnclosed/surroundedThe litter as a wholeعِصِيّSupporting polesThe structural frameكِلَّةInner screen or canopyInterior concealmentقِرَامOuter hanging curtainExterior draperyزَوْجPatterned fabricCloth covering the litter
The poles and fabric should not be conflated. Yuẓillu ʿiṣiyyahū suggests shade spread over or by the supports. The pronoun in ʿalayhi relates to the litter or enclosure under discussion.