וְעָשִׂ֙יתָ֙ יְרִיעֹ֣ת עִזִּ֔ים לְאֹ֖הֶל עַל־הַמִּשְׁכָּ֑ן עַשְׁתֵּי־עֶשְׂרֵ֥ה יְרִיעֹ֖ת תַּעֲשֶׂ֥ה אֹתָֽם׃
And thou shalt make curtains of goats’hair for a tent over the tabernacle; eleven curtains shalt thou make them.
Read kabbalistic (mystical) interpretation of Exodus 26:7: and classical mystical sources.