Sarlahi (सर्लाही ; Maithili: सर्लाही), a part of Madhesh Province, is one of the seventy-seven districts of Nepal. According to new laws, a combination of more than two or four villages makes a municipality, which covers an area of and had a population of 635,701 in 2001 and 769,729 in 2011. It is bordered to the west by the Bagmati River, to the east by Mahottari District, to the north by the Sivalik Hills, and to the south by Bihar State of India. Generally, the people of Sarlahi believe that the name Sarlahi comes from the name of the Sarla Devi temple. The Sarla Devi temple is situated in Hempur village in the Sarlahi district. There is a belief that if someone goes to the temple at night with a light, then that person will die. For that reason, people still do not go at night to that temple with light. There are no residences around this temple. The district is known for a couple of things. One of them is tomato production and supply. Lalbandi is the place of this district which is known for supplying the tomato demand of the whole country. Scientific tomato farming was practiced in Sarlahi district at Bagwani Kendra Nawalpur, Netragunj. Lalbandi is the most famous for growing tomatoes in the country. It is also known as the tomato capital of Nepal. Farhadwa is the village which is famous for fish production and export. The production of sugarcane is also seems to be significant in the district. The Indushankr Chini Udhog Ltd. (Indushankr Sugar Mills) is a notable factory in the district. The Annapurna Sugars and General Industries Pvt Ltd. is probably one of the largest sugar mills in the country, located in Dhankaul VDC of Sarlahi. The plant commenced trial operations on January 17, 2014, with a successful crushing of over 16 lakh () quintals of cane. The mill will substantially help in meeting sugar requirements of the local Nepal market by producing around 300,000 quintals of white sugar. The mill is equipped with modern machinery to produce high-quality sugar.