פירוש על פסחים 9:2

It is forbidden to roast onions, eggs, or meat on coals unless there is enough time in the day for them to be roasted on both sides, to the degree of Ma’achal ben Derusa’i, which means half-cooked, even if it is kid meat. The reason is that since one placed them on coals, one’s principal concern is that the roasting be done quickly – even if the meat gets scorched, and we therefore fear that the coals will be stirred. However when it is already roasted to the degree of Ma’achal ben Derusa’i, then even in the case of beef, we do not fear that the coals might be stirred, for since it is already edible, there is no reason that anyone would want to stir the coals and ruin it.

He will arrange his table beautifully with fine dishes according to his ability, and he will prepare his seating place to recline in a dignified manner. Rema: Even a poor person who has no cushions should sit on a bench (Mordechai, beginning of the chapter on Erev Pesach)

Even a poor person who is sustained through charity must sell his clothing or sell or rent himself in order to buy wine for the four cups.