'Sari Dhorom refer to truth(Satya). Sari and Sarna are originated from the same root.According to the myth, Hapram ko(Ancestors) fired an arrow (usually taken as part of ritual) in search of Dhorom (religion), when they searched for the arrow they found the arrow under a Sal tree( Shorea robusta ). In rejoice for getting their answer for their religion the women cried out 'Sarna' and the men concluded 'Sari' as the arrow fell under Sari Sarjom (Sal tree). And since then both are followed as Santhal religions.