Why did Hercules leave the argonauts?

Hercules left the Argonauts during their quest for the Golden Fleece primarily to search for his companion, Hylas, who had gone missing. Hylas was abducted by water nymphs while fetching water, prompting Hercules to seek him out. Despite his absence, Hercules's strength and valor had a significant impact on the Argonauts' journey. Eventually, he was unable to reunite with the group, leading him to continue his own quest.