What is the ruling regarding the abrogated concession related to seminal discharge and Ghusl?

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The ruling that Ghusl is not required unless ejaculation occurs ('Al-Maa'u min Al-Maa') was initially a concession granted by the Messenger of Allah (peace be upon him). This concession was subsequently abrogated and replaced by the command for Ghusl. Evidence for this abrogation is found in the Hadith narrated by Sahal ibn Sa'd from Ubayy ibn Ka'b, stating that 'Water from water' was a concession which the Messenger of Allah (peace be upon him) later prohibited.