Atharvasikha Upanishad - Atharva Veda
Atharvasikha Upanishad in English rhyme
Atharvashikha Upanishad a Shaiva Upanishad be,
Explains the basic meaning of the divine Om truly,
The Om represents the Para Brahman universally,
The highest Brahman, and the "Ultimate Reality".
Om has four syllables, which symbolize precisely,
The four gods and the four Vedic scriptures really.