BT BB 6b(29) :דסברת לא תיתרע אשיתאי אנא נמי לא תיתרע אשיתאי‏ : you are of the opinion: "My wall should not become unsound." I also (am of the opinion): "My wall should not become unsound"
See the entire entry for *ˀāšī, ˀāšīṯā n.f. wall

BT BB 6b(29) :לא תיתרע אשיתאי‏ : my wall should not become unsound
See the entire entry for rˁˁ#2 vb. to crush, break up