Manusmriti
अवकाशेषु चोक्षेषु जलतीरेषु चैव हि । विविक्तेषु च तुष्यन्ति दत्तेन पितरः सदा ॥ २०७ ॥
The manes are always pleased with offerings made in open, naturally pure places, on the banks of rivers, and in secluded spots.
english translation
avakAzeSu cokSeSu jalatIreSu caiva hi । vivikteSu ca tuSyanti dattena pitaraH sadA ॥ 207 ॥
hk transliteration by Sanscript