Can you tell me the story about Laxmichand and the khaja prasad?

Certainly. According to Chapter 28 of the Shri Sai Satcharitra, on a day when Laxmichand was feeling particularly hungry and suffering from a backache, Sai Baba coincidentally requested 'khaja' (a type of sweet) for the food offering. During the afternoon arati, Baba openly expressed his desire for khaja prasad. When devotees brought two bowls of it, Baba made comments about hunger and back pain, which directly mirrored Laxmichand's unspoken troubles. After the arati, Laxmichand received the khaja, his desire was fulfilled, and this experience caused immense joy and solidified his devotion to Baba.