Salah netted the sixth shortly after entering the action, and was then mobbed by his team-mates.
"We are very happy all of us about him because he came in the middle of the season and it is always difficult to adapt," explained Azpilicueta to chelseafc.com, "so he is adapting really well and now we are going to see his best.
"We need to enjoy this victory because you don't win every time 6-0 against Arsenal. We had a really good game but we are just focusing game by game now.
"We enjoy this but after, the only thing we are going to have in our mind is the game against Crystal Palace and we have to be tough and try to get the three points."
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