It is narrated from their grandfather (Sayyiduna Amr bin Ka'b or Ka'b bin Amr, may Allah be pleased with him) that he saw the Messenger of Allah, peace and blessings be upon him, wipe over his head, until he wiped the back part of the head and, along with it, once wiped the front part of the neck that is connected to it. The narrator said: The back part of the neck is called «قَذَال» .