It is reported that Abū Ḥāzim Al-Ashja’ī – Allāh have mercy on him – said:

If you find yourself in a time when speech is accepted as knowledge and knowledge is accepted as deeds [instead of putting it into practice], then you are in the worst time and with the worst people.

Abū Bakr Al-Daynūrī, Al-Mujālasah wa Jawāhir Al-‘Ilm` 4:338.

Abū Ḥāzim Salmān Al-Ashja’ī (died circa 100H) was one of the eminent Tābi’īn. He was a fully reliable transmitter of ḥadīth and a companion of Abū Hurayrah – Allāh be pleased with him.