What is Pallavan (Expansion of thought) in Hindi writing?

Pallavan (Expansion of Thought):

• Definition: Elaborating and expanding a concise proverb, maxim, or poetic line into a detailed, lucid paragraph explaining its underlying philosophy.
• Key Rules: Explain core idea clearly, maintain logical flow, avoid personal references/criticism, and keep neutral formal tone.
• Example Topics: 'परहित सरिस धर्म नहिं भाई', 'अहिंसा परमो धर्मः'।