Does a man's foreplay with his wife, bringing her to the peak of passion without ejaculation, necessitate ghusl?

Ghusl (ritual bath) becomes obligatory due to janabah (state of ritual impurity) upon the penetration of the male organ into the female organ, even if ejaculation does not occur, or upon the discharge of semen. Semen is the fluid that exits with pleasure, followed by a weakening of the body. The man's semen is thick and white, while the woman's is thin and yellow. As for the fluid that exits to lubricate the vagina for ease of intercourse, it does not necessitate ghusl but rather necessitates wudu (ablution).