"Mum's Red Hair" (母ちゃんの赤い髪, Kaa-Chan no Akai Kami) is chapter 498 of the original Naruto manga.
When Naruto meets his mother, Kushina, in his subconscious, he at first thinks that she is the Nine-Tails' true form, which causes Kushina to angrily clobber Naruto on the head. She apologises to Naruto for her short temper and expresses her hope that Naruto had not inherited that from her. Picking on this, when Naruto realises who Kushina is, he hugs her and cries with joy, his overflowing happiness, neutralising the Nine Tails' hatred. The Nine-Tails is shocked when it recognises Kushina's chakra when she restrains it with her chakra chains. Naruto wants to know how Kushina and his father met, to which she bashfully tells him. After telling her story, Kushina tells Naruto that she loves him, much to his surprise then happiness, and when she playfully asks Naruto what is the product of the "Yellow Flash" and the "Red Hot-Blooded Habanero", he proudly responds that he is "Konoha's Orange Hokage".