DBZK Episode 20
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Frieza continues to collect the Namekian Dragon Balls, while Vegeta slaughters Cui. Meanwhile, Krillin and Gohan battle more of Frieza's minions, but not before they destroy the spaceship they used to reach the planet. Back on Earth, Goku is finally healed, thanks to Korin's new batch of Senzu beans, and he prepares to journey towards Namek.