the Prophet said: "Under every hair is sexual impurity so wash (all of) the hair and cleanse the skin."
Jami` at-Tirmidhi Book 1, Hadith 106
← Previous Hadith "I said: 'O Messenger of Allah! I am woman with tight braids on my head, should I undo it to perform Ghusl for Janabah? He said: 'No. It is sufficient that you only pour three scoops of water (with hands held together) over your head, then pour water over the rest of your body, to be purified.'" Or he said: "Then you will be purified."

Jami` at-Tirmidhi Book 1, Hadith 105 Next Hadith → "The Prophet would not perform Wudu after the Ghusl."

Jami` at-Tirmidhi Book 1, Hadith 107