dattatreya jayanthi

margazhi poornima is celebraed as dattatraya jayanthi. people celebrate this for prosperity and happiness. he is the son of sage ATRI and PATHIVRATHA ANUSUYA.
he is also called as attriya as he is the son of atri .sage atri did tapas and lord visnu blessed him saying ' DATTO MAYAHAMITI YATH BHAGAVAN SA DATTA' meaning i give myself so i am called DATTA .(lord visnu gave himself to atri muni) .he took birth as atri's son, called DATTA. . datta and atri makes DATTATREYA.
sage atri's is known for tapas and his wife anusuya is known for the chastity.once muni naradh went to devlok and talked high about anusuya's chastity to brahmani, laxmi and parvathi, who are also known for their chastity.they got jelous of anusuya.they wanted to test her chastity. they requested their husband,brahma, visnu and shiva to do .
when atri went to the river to take bath early in the morning, brahma, visnu and shiva came like sage . anusuya washed their feet with water and offered seat and some fruits . sage said they wanted food as they are hungry. anusuya prepared food and when she was ready to serve , they instructed anusuya to serve food naked then only they will eat. this was a real test for anusuya when her husband was not there. , immediately she closed her eyes,thought about her husband and god sage atri. she understood the person behind this action and their intentions.
she opened her eyes and took a handful of water and sprinkled on all the three
sages,saying ,"if my chastity is pure, let all the three sages become six months old baby". immediately they turned as six months old baby, and started crying for milk. she took the babies and gave milk. all the three children started growing up in there .
In devlok, all the three devi's started worrying for their husband.they askd naradh muni and he told the story to them. they felt ashamed of their action and went to atri's kutir and requested for pardon and appreciated the chastity of anusuya. anusuya again took a handful of water and sprinkled on the children and they turned as brahma, visnu and shiva.They told anusuya to ask for a boom, she said i want all the three as my son. So dattatreya is the combination of all brahma visnu and shiva's powers. with three faces.

people worship dattatreya , atri muni and anusuya on this day.seek their blessings .