Any venture starts with invoking the blessings of the Almighty for success. As part of the holy fire in the invocation is a bundle of sticks called in Sanskrit, “Samithu”.
For those who are doing self enquiry they may be having yagna in which all the thoughts are the SAMITHU. The question will be (who I am ) will be the ghee falls into the fire of yagna.
The ghee and the samithu all get burn, the prasam is the thoughtless stage, which gives the enlightenment.