After reaching Satyaloka, the devotee is specifically able to be incorporated fearlessly by the subtle body in an identity similar to that of the gross body, and one after another he gradually attains stages of existence from earthly to watery, fiery, glowing and airy, until he reaches the ethereal stage.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ततो विशेषं प्रतिपद्य निर्भय- स्तेनात्मनापोऽनलमूर्तिरत्वरन् । ज्योतिर्मयो वायुमुपेत्य काले वाय्वात्मना खं बृहदात्मलिङ्गम्
tato viśeṣaṃ pratipadya nirbhaya- stenātmanāpo'nalamūrtiratvaran | jyotirmayo vāyumupetya kāle vāyvātmanā khaṃ bṛhadātmaliṅgam
SB 2.2.28