Source Credit

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Primary Source 

Narmadāṣṭakamis traditionally attributed toĀdi Śaṅkarācārya (आदि शंकराचार्य)the great 8th-century philosopher and saint of Advaita Vedānta.

It is preserved and transmitted through:

• Hindu oral tradition (श्रुति–स्मृति      परंपरा)
• Sanskrit stotra compilations
• Shaiva and Narmada-centric devotional texts

Scriptural & Traditional References 

• Narmada Purāṇa
  – Describes the divine origin, glory, and spiritual merit of Maa Narmada
  – Emphasizes Narmada Parikrama and river worship
• Skanda Purāṇa (Reva Khanda)
  – Reva (Narmada) Mahatmya
  – Explains why mere darshan of Narmada grants punya
• Traditional Stotra Granthas such as:
• Stotra Ratnāvali
• Śaṅkarācārya Stotra Sangraha 
• Narmada Stuti Sangraha

 This hymn has been recited for centuries by Narmada Parikrama vāsīs, saints, and devotees as an expression of surrender to Maa Narmada. 

•  Traditional Sanskrit hymn Narmadāṣṭakam (Ādi Śaṅkarācārya), inspired by Narmada Mahatmya from Narmada Purāṇa. 
•  Narmadāṣṭakam, traditionally attributed to Ādi Śaṅkarācārya,referenced in Narmada Purāṇa and Skanda Purāṇa (Reva Khanda),
  as preserved in classical Sanskrit stotra traditions. 
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