Exodus 8:27 YLT

²⁵  And Pharaoh calleth unto Moses and to Aaron, and saith, 'Go, sacrifice to your God in the land;'

²⁶  and Moses saith, 'Not right to do so, for the abomination of the Egyptians we do sacrifice to Jehovah our God; lo, we sacrifice the abomination of the Egyptians before their eyes -- and they do not stone us!

²⁷  A journey of three days we go into the wilderness, and have sacrificed to Jehovah our God, as He saith unto us.'

²⁸  And Pharaoh saith, 'I send you away, and ye have sacrificed to Jehovah your God in the wilderness, only go not very far off; make ye supplication for me;'

²⁹  and Moses saith, 'Lo, I am going out from thee, and have made supplication unto Jehovah, and the beetle hath turned aside from Pharaoh, from his servants, and from his people -- to-morrow, only let not Pharaoh add to deceive -- in not sending the people away to sacrifice to Jehovah.'