पुण्यकर्मफलानुभवकाले चित्तवृत्तिः अन्तर्मुखी भूत्वा आत्मस्वरूपानन्दं प्रतिबिम्बति। सः एव प्रियमोदप्रमोदरूपः। सा वृत्तिः पुण्यकर्मफलभोगात् निवृत्ता निद्रादशायां विलीयते। इति आनन्दमयकोशः।
What is the ānandamaya kośa
When the fruits of puṇya are being experienced, a vr̥tti of the mind goes inwards. The natural ānanda of the ātma reflects on that vr̥tti. These are the forms of priya (seeing), moda (obtaining) and pramoda (enjoying). When the enjoyment of puṇya is complete, they desist and resolve during sleep. This is the ānandamaya kośa.