Is it true what was reported from the Prophet (peace be upon him) that if a man's fluid precedes a woman's fluid, a male child is produced, and how can this be scientifically proven given that a woman's fluid is faster?

As for resemblance in children, if the man's fluid precedes, the resemblance is to him, and if the woman's fluid precedes, the resemblance is to her. It has been narrated from the Prophet, peace and blessings be upon him, that the man's fluid is white and thick, and the woman's fluid is yellow and thin. Whichever dominates, the child and the resemblance will be, by Allah's will. If the man's fluid dominates, the child will be male, and if the woman's fluid dominates, it will be female. As for the claim that the woman's fluid is always faster than the man's, it is incorrect, for speed in ejaculation does not always mean precedence.