A sīmā (“boundary”) defines the area within which a local Buddhist monastic community (saṅgha) can perform legal procedures (kamma), such as full ordination (upasampadā). The Balapiṭiya sīmā, a “water-splashing boundary” (udakukkhe­pasīmā), was the first sīmā established by the Amarapuranikāya, a monastic lineage which originated in Sri Lanka in the first half of the 19th century. This volume contains a brief introduction to the dispute, describing the period up to the second Sinhalese delegation to Burma in 1860. It furthermore includes an edition and translation of the Sīmāvivāda­vini­cchaya­kathā (“Exposition of the Judgement on the Boundary Dispute”), a text written in Pāli in 1858 by Ñeyyadhamma, the saṅgharāja (head of the Buddhist community) in Burma, in response to a request from the first Sinhalese delegation to Burma which arrived in 1858. Although this text was already edited by the Russian Indologist J. P. Minayeff in 1887, a new edition was required, since Minayeff’s text, based on a single Sinhalese manuscript, contains various lacunae. The new edition is based on three Burmese manuscripts and one Sinhalese manuscript, as well as on Kalyāṇa’s gloss (nissaya) to the text, accessible in a single Burmese manuscript.