TgO Gen41:50 :וֻליוֹסֵף אִתיְלִידוּ תְרֵין בְנִין עַד לָא עַלַת שַתָא דְכַפנָא‏ : two sons were born to Joseph before the year of famine came
See the entire entry for ˁaḏ lā, ˁaddəlā conj. before