DVIJA GANAPATHI
Appearance:

Ashvini Nakshatra is related to Dwija Ganesh.

Dwija Ganapati is represented with four heads and four hands
He is depicted in moon-white like color.
Dvija Ganapathi holds Japa beads mala (rudraksha),
a water vessel (kamandalam), a staff (thandam)
and an ole leaves scripture pustaka (ancient books made from leaves).

Dwija Ganapati or Dvija Ganapathi is regarded as the Twice Born, Dwija Ganapathi is depicted to be equivalent to Lord Brahma, as per Upanayana a function where the Brahmin of young age are taught about Gayatri Mantras to become Vedic Pandits. Everyone who undergoes with this ceremony is believed to be born again.
Mantra:

atha dvijagaNapatidhyAnaM || mudgalapurANE ||

yaM pustukAkShaguNadaMDakamaMDala
shrIvidyOtamAnakarabhUShaNa miMduvarNaM |
staMbEramAnanacatuShTayashObhamAnaM |
tvAM yaH smarEddvijagaNAdhipatE sadhanyaH ||6|| shubhravarNaH

Mantra (Easy to read):

atha dvija ganapati dhyaanam || mudgala puraane ||

Yam Pustukaakshaguna Danda Kamandala
Shrividyoothamaan, Karabhooshana mimduvarnam |
Stambera Maanana Chatushtaya Shobhamaanam |
Tvam Yah Smaredwija Ganadhipate Sa Dhanyah || 6 || Shubhravarnah

Mantra Translation:

Ganapati the Twice-Born". He has four heads and four arms. He is white in colour. His hands hold the rosary, the washing pot (kamandalu), the walking-stick of an ascetic or the ritual spoon (sruk) and the manuscript on palm-leaves (pustaka).
Mantra Benefits:

Worshipping this form of God Ganesh is believed to help in reduce debt problems and make materialistic gains.
Dvija Ganapati can be worshipped in to attain good name and fame in the world.