This prohibition was strictly observed during the time of Josephus (early-mid 1st century CE), as evinced by The Jewish War (2.590) and Vita § 13. See also Eric M. Meyers, et al., Excavations at the Ancient Synagogue of Gush Ḥalav, American Schools of Oriental Research: Winona Lake 1990, p. 17. The prohibition of making use of oil produced by Gentiles was later cancelled by R. Judah HaNasi (late 2nd century CE). Cf. Babylonian Talmud (Avodah Zarah 36a), where it writes: "As for [olive] oil [produced by non-Jews], Rabbi Judah and his court conducted a vote over it and permitted its use."
An allusion to Numbers 19:14, where it is inferred that all men and utensils who are under the same 'tent' or roof as a corpse, or who are overshadowed by something which also overshadows a corpse, they would also suffer corpse uncleanness and remain unclean for seven days.
An allusion to Leviticus 11:38, namely, foodstuffs (e.g. grain, fruit, etc.) cannot become unclean unless moisture has first fallen upon them after being harvested; also, this moisture must be such as the owner of the foodstuffs desires. The seven liquids which can render foodstuffs susceptible to uncleanness are a) wine, b) honey, c) oil, d) milk, e) dew, f) blood, and f) water. In the case of vintage grapes, the Sages decreed automatic susceptibility upon them.
This prohibition was strictly observed during the time of Josephus (early-mid 1st century CE), as evinced by The Jewish War (2.590) and Vita § 13. See also Eric M. Meyers, et al., Excavations at the Ancient Synagogue of Gush Ḥalav, American Schools of Oriental Research: Winona Lake 1990, p. 17. The prohibition of making use of oil produced by Gentiles was later cancelled by R. Judah HaNasi (late 2nd century CE). Cf. Babylonian Talmud (Avodah Zarah 36a), where it writes: "As for [olive] oil [produced by non-Jews], Rabbi Judah and his court conducted a vote over it and permitted its use."
Meiri (2006). Daniel Bitton (ed.). Beit HaBechirah (Chiddushei ha-Meiri) (in Hebrew). Vol. 1. Jerusalem: Hamaor Institute. p. 28. OCLC181631040., s.v. Shabbat 13b
Chananel (1995). David Metzger (ed.). Pirushei Rabbeinu Chananel bar Chushiel Le-Talmud (Tractate Shabbat) (in Hebrew). Jerusalem: Machon 'Lev Sameach'. p. 21 (17b). OCLC122703105.
Chananel (1995). David Metzger (ed.). Pirushei Rabbeinu Chananel bar Chushiel Le-Talmud (Tractate Shabbat) (in Hebrew). Jerusalem: Machon 'Lev Sameach'. p. 17 (13b). OCLC122703105.
Meiri (2006). Daniel Bitton (ed.). Beit HaBechirah (Chiddushei ha-Meiri) (in Hebrew). Vol. 1. Jerusalem: Hamaor Institute. p. 29. OCLC181631040., s.v. Shabbat 13b
Meiri (2006). Daniel Bitton (ed.). Beit HaBechirah (Chiddushei ha-Meiri) (in Hebrew). Vol. 7. Jerusalem: Hamaor Institute. p. 61. OCLC181631040., s.v. Avodah Zarah 35b, והפת
