What agreements do the lord of the castle and Gawain make? What did the lord of the castle promise Gawain?

The lord insists that Gawain stay for the remaining three days and relax in bed. Jubilant, Gawain again declares himself the servant of the lord, ready to do his bidding. The lord decides that the next day, Gawain will stay in bed until attending high mass and dinner with the lady of the castle; in the meantime, the lord himself will rise at dawn to go hunting. He suggests one more thing: whatever he wins in the forest tomorrow will be given to Gawain, and in exchange, whatever Gawain wins in the castle during the day he must give to the lord. Gawain agrees to this bargain, and the lord calls for more wine and revelry to celebrate their game.