Genesis 17:22-24

Young's Literal Translation

²² and He finisheth speaking with him, and God goeth up from Abraham.

²³ And Abraham taketh Ishmael his son, and all those born in his house, and all those bought with his money -- every male among the men of Abraham's house -- and circumciseth the flesh of their foreskin, in this self-same day, as God hath spoken with him.

²⁴ And Abraham [is] a son of ninety and nine years in the flesh of his foreskin being circumcised;