On the eve of Passover close to the Minchah [period], a person may not eat until it becomes dark.  Even the poorest man in Israel may not eat unless he reclines. And they must give him not less than four cups of wine, even though he is supported from the [charity] plate.

They pour for him the first cup. Beis Shammai say: He recites the benediction over the day, and then he recites the benediction over the wine.  But Beis Hillel say: He recites the benediction over the wine, and then recites the benediction over the day.