Is one who missed the Fajr prayer while asleep and made it up before sunrise sinful?

If you have taken the necessary means to wake up for prayer, but then sleep overcame you, there is no sin upon you. This is based on the saying of the Prophet, peace and blessings be upon him: "Indeed, there is no negligence in sleep; negligence is only in wakefulness. So, if one of you forgets a prayer or sleeps through it, let him pray it when he remembers it."