Other necessities include invoking the different names of the demigods by specific hymns and vows of recompense, in accordance with the particular scripture, for specific purposes and by specific processes.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
गतयो मतयः श्रद्धा प्रायश्चित्तं समर्पणम् । पुरुषावयवैरेते सम्भाराः सम्भृता मया
gatayo matayaḥ śraddhā prāyaścittaṃ samarpaṇam | puruṣāvayavairete sambhārāḥ sambhṛtā mayā
SB 2.6.26