The three points propelled Saints to third in the Barclays Premier League and made this a better start than they managed when finishing runners-up in 1983/84.
When asked if a similar finish was possible, Pochettino said "I don't know" in English and with a smile but believes there are no barriers stopping his side.
"I want to congratulate my players because they put in an extraordinary performance today," the former Argentina defender said.
"It is not just about my players that are playing regularly, but also that are not playing regularly and are on the bench.
"It shows that we believe as a collective, we are playing as a collective and reaping the results from that. I have been saying for a couple of weeks now that the sky is the limit. We don't set ourselves any limits.
"The most important thing is that we keep on learning, that we keep on improving, that we keep on playing as a team.
"The position in the league now is not important, the main thing is that we continue improving."
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