andha pūtanā

 The most accurate Devanagari spelling is अन्ध पूतना (or, if treated as a compound, अन्धपूतना).

✅ Breakdown of the phrase

• andha = “blind” → अन्ध
  • Standard Sanskrit spelling uses अन्ध, not अंध, though the latter appears in modern Hindi.
• pūtanā = a female demon in Sanskrit mythology (notably in the Kṛṣṇa story) → पूतना

✅ Possible correct forms

• अन्ध पूतना — two separate words (most literal rendering).
• अन्धपूतना — a compound noun (common in Sanskrit compounds).
• अंध पूतना / अंधपूतना — acceptable in modern Hindi orthography, where ंध → ध is often simplified to ंध.

✅ Meaning check

If you intend the phrase to mean “blind Pūtanā” (i.e., describing the demon Pūtanā as blind), then अन्ध पूतना is the correct classical Sanskrit spelling.