Sinhala Wal Katha has its roots in the ancient Buddhist scriptures, specifically in the Pali Canon, which dates back to the 3rd century BCE. This collection of scriptures contains the teachings of the Buddha and his closest disciples. The term "Sinhala Wal Katha" is derived from the Pali language, where "Sinhala" means lion and "Wal Katha" means roar or statement. This phrase represents the Buddha's powerful and authoritative voice, which was said to be as loud as a lion's roar.