Genउत्पत्ति Genesisउत्पत्ति, chapterअध्याय Book of Genesisउत्पत्ति, chapterअध्याय 21

For what reason she said unto Avraham [exalted father/Fly They Will], Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, [even] with Yitz’chak [Laughter].