Shiva Purana
सनत्कुमारमासीनं शश्वद्बालवपुर्धरम् ॥ तत्कालमात्रोपरतं समाधेरचलात्मनः ॥ १९ ॥
Sanat-kumāra was seated there, always assuming the form of a child. That moment of self-motion ceased in trance.
english translation
sanatkumAramAsInaM zazvadbAlavapurdharam ॥ tatkAlamAtroparataM samAdheracalAtmanaH ॥ 19 ॥
hk transliteration by Sanscript