आगमे विश्वासटिप्पन्यः

Festival falling on the eleventh day
(ekadashi) of the bright (waxing) half of
the lunar month of Phalgun
(February–March). As are all of the
eleventh-day observances, this is dedicated to the worship of Vishnu. Most
Hindu festivals have certain prescribed
rites, usually involving fasting (upavasa)
and worship, and often promise specific
benefits for faithful performance. On
this day, one should worship the amvala
tree since this is one of the places in
which Vishnu is believed to reside.