Agni Purāṇa

129 - Guidelines for storing and selling grains 

The Lord said: 

1-2. Ishall describe the quantity of food-grains to be gathered when there may be fall of meteors, earthquake, hurricane, eclipse, entry of foreign matter and conflagration in different directions in different months (of the year). If these occur in the month of) Chaitra (April-May), the ornaments etc. gathered (would become) four-fold (worth) in (the course of) six months. 

3. All things collected in the (month of) Vaisakha (May-June) would become six-fold (worth) in eight months. In the same way, the grains such as barley and wheat (stocked) in the (months of) Jyeshtha (June-July) and Ashadha (July-August) (would fetch more). 

4. (Similarly) one would get (increased returns) in the month of Mårgasirsha (December-January) from ghee, oil etc. purchased in (the month of) Śråvaņa (August-September), apparels and grains in Ashvina (October-November) and grains (purchased) in Kärttika (November-December). 

5. (One would get) profit by the purchase of saffron and perfumes in Pushya (January-February), food grains in Māgha (February-March) and perfumes in Phālguna (March-April). Thus the arghakānda (section on storing and selling of grains and goods) has been described.