Kārtika is the holiest month in the lunar calendar. Kārtika Māsa, also known as Dāmodar Māsa, is described in the scriptures as the best among months.
Lord Shri Krishna says, “Of all plants, the sacred Tulasi is most dear to Me; of all months, Kārtika is most dear, of all places of pilgrimage, My beloved Dwarka is most dear, and of all days, Ekadashi is most dear.” (Padma Purana, Uttara Khand 112.3)
“As Sat-yuga is the best of yugas (ages), as the Vedas are the best among scriptures, as Ganga is best of rivers, so Kārtika is the best of months, the most dear to Lord Krishna.” (Skanda Purana)
One may observe the following foremost activities throughout the entire month of Kārtika:
Japa – chanting the holy names of the Lord.
Worship the Lord by offering ghee lamps (diyas), flowers, incense, food, etc.
Worship of Tulasi Devi.
Puranas describe the glory of the pious Kārtika month:
“If somebody performs even a little worship of Lord Shri Hari in this month, He offers that devotee His own abode.”
“Of all gifts, the gift of a lamp during the month of Kārtika is the best. No gift is its equal.”