Lord Dattatreya is AADI GURU. His first incarnation in Kaliyuga was Sree Sreepada Sreevallabha. Lord Dattatreya’s second incarnation was Sree Nrisimha Saraswati. His third incarnation was Sree Manika Prabhu. His fourth incarnation was Sree Akkalkot Maharaj, popularly known as Swami Samarth. Lord Dattatreya’s fifth incarnation was Sri Saibaba of Shirdi.
Sree Sreepada Sreevallabha, who was the first incarnation of Aadi Guru, Lord Dattatreya, was born in a town called Pithapuram in the State of Andhra Pradesh. He incarnated on the Vinayaka Chathurthi day and his birth star was Chitra. One who performs Homa (a hindu ritual wherein oblation or religious offering is made to Fire God) and worships Lord Sreepada on the day of his birth star, his defects (Dosha), curses, imperfections, and miseries shall get warded off and he shall be bestowed with peace and prosperity and abundance in all aspects of his life.
Sreepada Sreevallabha
With a devotee's inner (true) feelings. He is not concerned with family background, lineage, or other material matters. - Charitaamrutam. It is ŚreePāda's Maha sankalpam to raise the vibrations of the world, ushering in the 'Satya Yugam' and the 'Yoga kaalam' of the same has just arrived.
Eka Mukha Dattatreya
Lord Dattatreya is the Adi Guru (Primordial Master). Hence, His prime purpose is to awaken His seekers and devotees.
Dattatreya expresses Himself here to bless countless souls across the many dimensions of existence. He has been present here, since time immemorial. Just that He has chosen to express Himself now, for devotees to perceive His presence.
Sree Sai Baba
Here Baba expresses Himself as 'Gnyāna avatar' and addressed as 'jnāna Sainath'. As the Name suggests, here, HE will be the 'Granter of Wisdom' which is foremost for a seeker of Spirituality or Truth. Knowledge is the first step towards raising the Kundalini shakthi which is dormant in a seeker. All our journeys since aeons, have been towards this. Sat Chit Anandam (Truth-Wisdom-Bliss) is what HE strives to lead His devotees to.