Indradyumna Mahārāja retired from family life and went to the Malaya Hills, where he had a small cottage for his āśrama. He wore matted locks on his head and always engaged in austerities. Once, while observing a vow of silence, he was fully engaged in the worship of the Lord and absorbed in the ecstasy of love of Godhead.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स एकदाऽऽराधनकाल आत्मवान् गृहीतमौनव्रत ईश्वरं हरिम् । जटाधरस्तापस आप्लुतोऽच्युतं समर्चयामास कुलाचलाश्रमः
sa ekadā''rādhanakāla ātmavān gṛhītamaunavrata īśvaraṃ harim | jaṭādharastāpasa āpluto'cyutaṃ samarcayāmāsa kulācalāśramaḥ
SB 8.4.8