BT Ber 4a(15) :אורתא דתליסר נגהי ארביסר‏ : the night of the thirteenth (to the) dawn of the fourteenth
See the entire entry for ˀarbaˁsar num. fourteen

BT Ber 4a(15) :באורתא דתליסר נגהי ארביסר‏ : during the night between the thirteenth and dawn on the fourteenth
See the entire entry for nghy n.m.pl.t. dawn

BT Ber 4a(15) :אורתא דתליסר נגהי ארביסר‏ : the night of the thirteenth (to the) dawn of the fourteenth
See the entire entry for tlt@ˁsr num. thirteen