עַל־כֵּ֡ן לֹֽא־יֹאכְל֨וּ בְנֵֽי־יִשְׂרָאֵ֜ל אֶת־גִּ֣יד הַנָּשֶׁ֗ה אֲשֶׁר֙ עַל־כַּ֣ף הַיָּרֵ֔ךְ עַ֖ד הַיּ֣וֹם הַזֶּ֑ה כִּ֤י נָגַע֙ בְּכַף־יֶ֣רֶךְ יַעֲקֹ֔ב בְּגִ֖יד הַנָּשֶֽׁה׃
Therefore the children of Yisrael do not eat the sciatic nerve that is on the hollow of the thigh, to this day, because he touched the hollow of Yaakov’s thigh on the sciatic nerve.
Torah Temimah points to Chullin 100b (summary of the prohibition).
מצות גיד הנשה נוהגת בארץ ובחוצה לארץ, בפני הבית ושלא בפני הבית, בחולין ובמוקדשין.
The commandment of the sciatic nerve applies in the Land and outside the Land, while the Temple stands and when it does not stand, with ordinary animals and with consecrated animals.
The Gemara states the broad applicability of the prohibition.
Derash on the scope of the mitzvah (Bavli).
The prohibition of the sciatic nerve applies in all places and at all times, to both ordinary and consecrated animals.