Madonna has reportedly ended her friendship with Britney Spears - because the "Toxic" singer has quit the Kabbalah.
The pop superstar - who was responsible for introducing Britney to the mystical Jewish cult - has reportedly demanded the return of the 12th-century Kabbalah book she gave the star as a wedding gift.
A source is quoted in Britain's Hot Stars magazine as saying, "Madonna spent months teaching Britney the Kabbalah system, and splashed out thousands on the ancient scripture for her. She feels she has wasted time, money and precious gifts on Brit."
Britney, 24, quit the Kabbalah with an announcement on her personal Web site last month, insisting her new "religion" was caring for her son, Sean Preston.
The message read, "I no longer study Kabbalah, my baby is my religion."
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