BT Ber 10a(48) :משום דלא נסבת איתתא ולא הוו לך בני‏ : because you did not take a wife and did not have any children
See the entire entry for ˀa/i(n)tā, ˀa/i(n)təṯā, ˀa(n)təṯā, ˀattā n.f. woman, wife