The ancient city of Ujjain enjoys the reputation of being a great seat of learning as early as the Mahabharata period. This is borne out by the fact that Lord Krishna and Sudama received regular instructions in the ashram of Guru Sandipani. They are a near the ashram is known as Ankapata, popularly believed to have been the place used by Lord Krishna for washing his writing tablet. The numerals 1 to 100 found on a stone are believed to have been engraved by Guru Sandipani. The Gomti Kunda referred to in the Puranas was the source of water supply to the ashram in the olden days. Animage of Nandi, belonging to the Shunga period, is to be found near the tank.