Where is commandment #290 found in the Bible?

This commandment is found in Leviticus 25:9, in the book of Leviticus.

Positive Commandment #290 of 613

Blow the ram's horn on the tenth day of the seventh month to free the slaves

Q: What is commandment #290 of the 613 commandments?

Commandment #290 is a positive commandment from Leviticus 25:9: "Blow the ram's horn on the tenth day of the seventh month to free the slaves." It belongs to the category of Shemittah and Yovel.

Commandment #290 — a positive obligation from Leviticus 25:9, classified under Shemittah and Yovel in the 613 commandments of the Torah.

Scripture

“'You shall then sound a ram's horn abroad on the tenth day of the seventh month; on the day of atonement you shall sound a horn all through your land.”

— Leviticus 25:9

Hebrew

ט וְהַעֲבַרְתָּ שׁוֹפַר תְּרוּעָה, בַּחֹדֶשׁ הַשְּׁבִעִי, בֶּעָשׂוֹר, לַחֹדֶשׁ; בְּיוֹם, הַכִּפֻּרִים, תַּעֲבִירוּ שׁוֹפָר, בְּכָל-אַרְצְכֶם.

Greek (Septuagint)

9 καὶ διαγγελεῖτε σάλπιγγος φωνῇ ἐν πάσῃ τῇ γῇ ὑμῶν τῷ μηνὶ τῷ ἑβδόμῳ τῇ δεκάτῃ τοῦ μηνός· τῇ ἡμέρᾳ τοῦ ἱλασμοῦ διαγγελεῖτε σάλπιγγι ἐν πάσῃ τῇ γῇ ὑμῶν