Naruto Episode 34

As Team 7, Team 10, and Team Guy recover, Team 8 witnesses Gaara mercilessly kill a team of Rain Genin. Although Gaara prepares to turn his attention to Team 8, his siblings persuade him to leave them alone. Gaara’s team beats the previous record for getting to the tower by a gigantic margin, and none of them are even remotely injured.

Source: Wikipedia

Naruto Episode 34 – Akamaru Trembles: Gaara’s Cruel Strength!