Pokémon: The Series Rewrite:Indigo League Part 1

Episode 41: Wake Up Snorlax!

Ash and the group find a Snorlax standing in their path and attempt to move it as its stoppingg the water flow for Lavender Town. Ash and the group head back to Lavender Town where they visit Mr. Fuji who reveals that the Cubone is actually now welcome to new people after Ash helped it out. Fuji gives Ash and the group a Poke Flute and they head to waken the Snorlax. They awaken it and Ash ends up catching the Pokémon saving the water flow but end up in a battle against Team Rocket which with the help of Snorlax, Ash wins. Ash adds Snorlax to his team sending Clefable back to the box.