Pitru Paksha is a 16 Lunar Day Period in Hindu Calendar, during this period Hindus pay homage to their ancestors especially through food offerings. Pitru Paksha is considered by Hindus to be auspicious, given the death rite performed during the ceremony, known as Shraddha. Listen to this Pitru Gayatri Mantra and seek blessings from ancestors.
Lyrics-
ॐ पितृगणाय विद्महे
जगत धारिणी धीमहि
तन्नो पितृ प्रचोदयात्