The Śiva·sūtras, technically akṣara·samāmnāya, variously called महेश्वरसूत्राणि, प्रत्याहारसूत्राणि, वर्णसमाम्नाय, etc., refer to a set of fourteen aphorisms devised as an arrangement of the sounds of Sanskrit for the purpose

The Iroha is a Japanese poem. Originally the poem was attributed to Kūkai, the founder of Shingon Buddhism, but more modern research has found the date of composition to be later in the Heian period.