Those who said: wash the hair thoroughly

Ibrahim said: It used to be said among the predecessors: Wash the hair and make the water reach the skin in the case of janabah.

Al-Hasan said: Under every hair there is janabah, so wet the hair and make the water reach the skin.

Abu al-Bakhtari said: Sayyiduna Hudhayfah (may Allah be pleased with him) came out having cut off his hair, and he said: "Under every hair that the water does not reach there is janabah, so treat it as an enemy. That is why I have become an enemy of my hair, as you see."

Sayyiduna Ali (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever, while taking the ritual bath for janabah, leaves unwashed on his body even a place the size of one hair, such and such will be done to him in the Fire." Sayyiduna Ali (may Allah be pleased with him) said: "From then on I became an enemy of my hair." Sayyiduna Ali (may Allah be pleased with him) used to shave his head.

Al-Hasan said: Under every hair there is janabah. And he said that Sayyiduna Abu Hurayrah (may Allah be pleased with him) used to say: "As for me, I wet the hair and make the water reach the skin."

Nafi' said: When Sayyiduna Ibn Umar (may Allah be pleased with them both) took the ritual bath for janabah, he would put water into his eyes and put his fingers into his navel.