The sufficiency of the full ritual bath in place of the ablution for prayer

Does the full ritual bath suffice in place of the ablution, or is it better to perform the ablution separately?
The full ritual bath suffices in place of the ablution;because of the saying of Allah the Exalted: [al-Ma'idah: 6] and it does not mention the ablution, but it is better to perform the ablution first, then wash the head three times until it is thoroughly wet, and then wash the rest of the body. This is the best. If one performs the full ritual bath all at once without a specific order, there is nothing wrong with it, but rinsing the mouth and sniffing water into the nose are required.