Ramayana 2.78.3

बलवान्वीर्यसम्पन्नो लक्ष्मणो नाम योऽप्यसौ।किं न मोचयते रामं कृत्वा स्म पितृनिग्रहम्।।।।

balavān vīryasampanno lakṣmaṇo nāma yo 'py asau | kiṁ na mocayate rāmaṁ kṛtvā sma pitṛnigraham ||

And why did Lakṣmaṇa—strong and full of valor—not free Rāma by restraining our father?