It is reported that the son of Al-Fuḍayl b. ‘Ayyāḍ – Allāh have mercy on him – said to his father:

Father! How sweet (beautiful) the speech of the Companions is! [Al-Fuḍayl] said, “Son, do you know why it was so sweet?” He replied, “No father, I do not.” He said, “Because they sought Allāh the Exalted when they spoke.”

Al-Bayhaqī, Shu’ab Al-īmān 2:299