49. aṣṭādaśapurāṇānāṃ

अष्टादशपुराणानां
सारं व्यासेन कीर्तितम् ।
परोपकारः पुण्याय
पापाय परपीडनम् ॥

aṣṭādaśapurāṇānāṃ
sāraṃ vyāsena kīrtitam

paropakāraḥ puṇyāya
pāpāya parapīḍanam

अष्टादश-पुराणानां सारम् (aṣṭādaśa-purāṇānāṃ sāram) = essence of 18 Purāṇānā-s
व्यासेन कीर्तितम् (vyāsena kīrtitam) = (is) glorified by śrī Veda Vyāsa
परोपकारः पुण्याय (paropakāraḥ puṇyāya) = helping others (leads to) merit
परपीडनम् पापाय (parapīḍanam pāpāya) = torturing others (leads to) demerit.

Meaning: The essence of 18 Purāṇānā-s is glorified by Veda Vyasa; benevolence (helping others) leads to merit and torturing others leads to demerit.

Credits: Courtesy Brahmachari Ved Chaitanya of Chinmaya International Foundation (CIF)
Image courtesy: Wall art at Ramakrishna Mission, Hyderabad
P.S.: All errors / mistakes are my own