What episode did Goku's hair catch on fire?

Goku's hair catches on fire in the "Dragon Ball Z" episode titled "Goku's Special Technique" (Episode 130). This occurs during the fight against Frieza on Planet Namek, specifically when Goku transforms into a Super Saiyan for the first time. His intense energy and emotions cause his hair to flare up, symbolizing his transformation and the power he gains in that moment.