| http://www.w3.org/ns/prov#value | - Jews who participated in the development of new kinds of industry or integrated into economic fields in which they were not previously found would appeal for counsel to the outstanding halakhic authorities of the day.R. David ben Zimra was asked about a Jew who had to buy oxen to process sugar; if the processing were not carried out on the Sabbaths and festivals, everything would be lost.1
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