TgO Gen42:27 :וַחזָא יָת כַספֵיה וְהָא הוּא בְפוֹם טוּענֵיה‏ : he saw his silver right there at the mouth of his sack
See the entire entry for ṭˁan, ṭa/uˁnā n.m. burden, load

TgO Gen42:27 :וֻפתַח חַד יָת סַקֵיה לְמִיתַן כִיסְתָא לִחמָרֵיה‏ : one opened his sack to give fodder to his ass
See the entire entry for saq, saqqā n.m. sack; sackcloth