It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) was asked about performing ablution (wudu) after the ritual bath (ghusl), and he (peace and blessings be upon him) said: "What ablution could be more comprehensive than the ritual bath?"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13320