שַׁחְרוּרִיתָא, B. Kam. 20ᵇ משום ש׳ דאשייתא because the walls get black (when people live in the house). B. Mets. 117ᵇ משום דאיכא ש׳ (Ms. H. שְׁחַרְתָּא דאשיתא; differ. in Ms. M., v. שְׁחַר II) because there is a claim in the case for the blackening of the walls.