The person who is in a field [i.e., doing farm work] should not return [to his house] to get his coat [even].
Also the person who is on a housetop [Note: This was a flat area where people retired for rest, prayer, etc., with its stairway on the outside] should not go down into his house to take anything out [when he flees].
[It will be] too bad for those who are pregnant and those who are nursing babies in those days.