Parashas Pekudei · Passuk 40:3
Torah Temimah points to Menachos 94a.
English: From “and you shall screen the Ark”: Rabbi taught that wherever Scripture says “al” in this context, it means adjacent to, not literally upon.
Derash on the placement of the parochet relative to the Ark.
The wording establishes that the parochet was adjacent to the Ark rather than literally over it.