If the heart is totally absorbed, then all the other senses are obliterated in it, and there is no need for the tongue.
Take the case of Laila:
She was not a spiritual being, but of flesh, fashioned of water and clay. Yet passion for her produced such absorption, and so utterly seized and overwhelmed Majnun, that he had no need to see
Laila with his eyes, no need to hear her voice. He could not separate himself from the thought of her, causing him to cry:
Your name is upon my tongue.
Your image is in my sight.
Your memory in my heart,
Where can I send these words I write?
picture credits: Harshal Patel
location: Zarvani, Gujarat