וְאֵת֙ הַכֶּ֣בֶשׂ הַשֵּׁנִ֔י תַּעֲשֶׂ֖ה בֵּ֣ין הָעַרְבָּ֑יִם כְּמִנְחַ֨ת הַבֹּ֤קֶר וּכְנִסְכָּהּ֙ תַּֽעֲשֶׂה־לָּ֔הּ לְרֵ֣יחַ נִיחֹ֔חַ אִשֶּׁ֖ה לַיהוָֽה׃
And the other lamb thou shalt offer at dusk, and shalt do thereto according to the meal-offering of the morning, and according to the drink-offering thereof, for a sweet savour, an offering made by fire unto the LORD.
Read kabbalistic (mystical) interpretation of Exodus 29:41: and classical mystical sources.