In the Bayaans multiple it is generally mentioned that there are multiple Sunnahs that can be observed when one sits on the floor and eats, please list these with proper references in terms of Ahadith. It is also mentioned that there are medicinal benefits for this, please identify these with any available references.
It is Sunnah to sit on the floor and eat. To sit on a dinning table will be
contrary to Sunnah. It is narrated in a Hadith, ‘Whenever food was brough to
Rasulullah (Sallallaahu Alayhi Wasallam), he would place it on the ground.’
(Ahmad) This is closer to humility.
It is also narrated that Rasulullah (Sallallaahu Alayhi Wasallam) never ate
from a table. (Bukhari). There are Sunnat methods of sitting on the floor.
It is narrated that Rasulullah (Sallallaahu Alayhi Wasallam) should
sometimes squat on his knees or raise his right leg and sit on his left leg
or sit in Tashahhud position and eat. (Abu Dawud). So, this was the practice
of Rasulullah (Sallallaahu Alayhi Wasallam) and it is sufficient for us.
(Ihya-ul-Uloom vol.3 pg.6)
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai