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The statement that describes the Federalists' position including for a Bill of Rights in the Constitution is "The Bill of Rights was only needed to ensure ratification by the states."
During the summer of 1787, delegates met at the Constitutional Convention in the city of Philadelphia, Pennsylvania to create a new Constitution for the United States. They debated and discussed the arguments of Federalists that supported the creation of a strong central government and Antifederalists, who supported a simpler form of government that included rights for the citizens.
The Constitution needed to be ratified by the states and that is when Federalist James Madison decided to draft the Bill of Rights, which is the first 10 Amendments to the United States Constitution.