Sri Sathya Sai Speaks, Vol 23 (1990)
Topic - Excerpt from Divine Discourse
What the Avatars mean

The prefix "Sri" is affixed to the names of such persons to indicate that without the prefix they are tainted by their bodies. That is why "Sri" is added to the names of Krishna, Rama, Venkateswara and so on to confer beatitude on them. With regard to Easwara, however, the epithet "Sri" is not applied because Easwara is ever in a state of beatitude. "Sankara" remains "Sankara" without a "Sri." Siva is not called "Sri Siva." Easwara is not referred to as "Sri Easwara." He is the embodiment of all auspiciousness and holiness. Hence he needs no other appellation. He is the source of Sakala Aiswarya (all prosperity and well-being).