Is there anything upon a man if he committed masturbation once during one of the nights of staying in Mina while performing the Hajj pilgrimage?

One who commits masturbation in the Haram (definition) during the days of Tashreeq is astonishing; because the sin is magnified by the greatness of the time and place. The sin diminishes the reward of Hajj, as the Prophet, peace and blessings be upon him, said: "Whoever performs Hajj and does not commit Rafath (obscene speech) or Fusooq (disobedience), he will return as on the day his mother gave birth to him." Hajj is not invalidated by sin, but its reward is diminished. The perpetrator must engage in sincere repentance, seek forgiveness, feel remorse, resolve not to return to the sin, and increase in good deeds.