וְשָׁחַטְתָּ֖ אֶת־הָאָ֑יִל וְלָֽקַחְתָּ֙ אֶת־דָּמ֔וֹ וְזָרַקְתָּ֥ עַל־הַמִּזְבֵּ֖חַ סָבִֽיב׃
And thou shalt slay the ram, and thou shalt take its blood, and dash it round about against the altar.
Read kabbalistic (mystical) interpretation of Exodus 29:16: and classical mystical sources.