[Advaita-l] Reference to Boudhavatara in sankalpa

[Srikanta Narayanaswami]

Shube Shobane Muhurte Adya Brahmanaha Dvitaya Parardhaha Shveta Varaha Kalpe
> Vaivasvata Manvantare Ashtavigumshati Tame Kali yuge Prathame Pade Jambhu
> Dweepe Bharatha Varshe Bharatha Kande  Meruho Dakshine Parshve Shalivahana
> Shakhe Asnmin Vartamana Boudhavatara Ramakshetre ,,,,,it goes on
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With reference to the above discussion,I am curious to know why the reference to "Boudhavatara"is introduced in saying the sankalpa in sandhyavandanam mantra?
 
N.Srikanta.