How did shere khan receive the message that Mowgli left to the village?

Shere Khan received the message about Mowgli's departure to the village through Kaa, the python, who overheard Mowgli discussing his plans. Kaa conveyed this information to Shere Khan, revealing that Mowgli had chosen to leave the jungle and live among humans. This news reignited Shere Khan's desire to confront Mowgli, seeing it as an opportunity to assert his dominance.