The wall that must be built in your heart is the wall of piety and reliance on God. "And in Allah should the believers put their trust." [The Holy Quran, 3: 122] "In Allah let the trusting put their trust."
Garkuwar da wajibi ne ku samar wa zuciyar ku, ita ce garkuwa ta imani da Allah da tawakkali da Allah; "Don haka, sai mumanai su dogara ga Allah" (Suratu Al Imrana 3:122) "kuma ga Allah sai masu dogaro su dogara" (Suratu Ibrahim 14:12) "Kuma wanda ya dogara ga Allah, to, Allah ne Ma'ishinsa" (Suratut Talak 65:3) "Ashe, Allah, bai zama Mai isa ga bawanSa ba?"