why did naruto get knocked out after himarawai touched him?
In the anime series Naruto, there is no specific instance where Naruto gets knocked out after being touched by Himawari Hyuga. Himawari is Naruto's daughter in the series. However, it is possible that you may be referring to an incident from Boruto: Naruto Next Generations, the sequel series.
In Boruto: Naruto Next Generations, Himawari accidentally touches Naruto's wound while he is recovering from a tough battle, which causes him severe pain and renders him unconscious. This is because Himawari's touch unknowingly activates the Byakugan, a powerful eye technique inherited from her Hyuga clan lineage. Naruto's wound was a result of the villainous Kawaki, and Himawari's touch directly affected it, causing immense pain to Naruto.
If this is the event you are referring to, Naruto getting knocked out was a result of the pain induced by Himawari's touch on his injury.