Not only Kesab, many others are in such straits. There's no food in the house, but there is a means of getting it – through his daughter. A couple of sacks of rice, two or three times her weight. Also some cash, with which they can buy a few clothes.
A year or so ago, Kesab had searched for a decent groom, so that he could give Soilo away along with a few jewels, saris and utensils. He'd been willing to spend all he had to get her married according to the scriptures and norms. But because everything he had was not much, he couldn't find an adequate recipient. Her looks are ordinary, yet she is maturing fast.