It indicates ingratitude from your people.
Dream dictionary: Whispers dream meanings
…of sick people, losses, destruction, fire, bad news, forfeiture of properties, stagnation of the economy, losing one’s source of livelihood, imprisonment, breach of promise, forgetting one’s knowledge, ne- glecting one’s prayers, obstruction of charities, hindrance of alms distribution, negating the rights of others, retreating to one’s privacy, rising prices, bad crop, a tyrant ruler, glass blowing, or bankruptcy. As for one who loves to meet his Lord, seeing the archangel ‘Izrail in a dream means attainment of one’s goal, fulfillment of a promise, freedom from prison, good news and glad tidings. If an unknown or a common person approaches someone in the street and whispers something in his ear in confidence, the commoner here represents the angel of death. It is said that each human being will see the archangel ‘Izrail three times during his lifetime, and it is the third time that ‘Izrail, upon whom be peace, will…
…will stand humbly before him. If they prostrate themselves before him in a dream, it means that they truly praise him. If a king sees himself following the opinion of a woman in a dream, it means that he will lose his kingdom or fall victim to depression, or that he will be thrown into jail. If he opposes her in the dream, it means that he will escape from a great danger. If a king sees himself walking in a dream when a common subject comes near him and whispers something in his ear, the commoner here represents the angel of death ‘Izrail, and it means that the king may die a sudden death. Eating from the hand of one’s servant in a dream represents the growing of one’s authority, increase of his business, knowledge, or wisdom. If a king sees himself preparing a banquet for guests in a…
Hearing them in dreams symbolizes the fear of gossip about you, but if you are the one who is whispering then it could indicate sexual orientation or romantic relationships that you want to keep hidden. Dreaming that someone whispers something in your ear even though you may not understand the message, is considered as harbinger of unforeseen important help for your projects.