Rice is the seed of a grass species. It is the primary food of over half of the world’s human population, especially in Asia. It is a cereal grain.
Abdullah ibn Omar, may Allah be pleased with them both, reported: “Prophet Muhammad, peace be upon him, said, “Three men were walking, and rain began to fall, so they took shelter in a cave in a mountain. A big rock rolled over and blocked the mouth of the cave. They said to each other, ‘Invoke Allah with the best deed you have performed (so Allah might remove the rock)’… Then the third man said, ‘O Allah! No doubt You know that once I employed a worker for one Faraq (three Sa’s) of rice and when I wanted to pay him, he refused to take it, so I sowed it and from its yield I bought cows and a shepherd. After a time that man came and demanded his money. I said to him: ‘Go to those cows and the shepherd and take them for they are for you.’ He asked me whether I was joking with him. I told him that I was not joking with him and all that belonged to him. O Allah! If You regard that I did it sincerely for pleasing You, then please remove the rock’, so the rock was removed completely from the mouth of the cave.” (Sahih Al-Bukhari, The Book of Agriculture)