The festival of lights is one of the great festival of all Hindu people. In this festival we worship the Goddess of wealth,Laxmi.
The festival of lights starts with honoring the crow, the dog & the cow. The fourth day coincides with Newari New Year. On the fourth & fifth evenings Laxmi, the goddess of wealth & prosperity, is enticed into the home by lights. Thousands of oil lamps & candles adorn doors, windows & balconies. Brothers are feted by their sisters on the last day & honored with elaborate Tikas and garlands.
The last day of tihar is ‘Bhai tika’, putting tika on your brothers by your sisters.  The main theme behind bhai tika is the sisters praying for their brother’s long life from  god of the underworld Yama Raj.