Matsyapurana 194.22

194.22

kārtikasya tu māsasya hyarcayitvā maheśvaram.
aśvamedhāddaśaguṇaṃ pravadanti manīṣiṇaḥ .. 194.21

On the 14th day in the month of Kârtika one who worships Śiva there gets ten times the merits of having performed the Aśvamedha sacrifice. Those who lit up a hundred wicks in lamps filled with clarified butter ascend to the realm of Śiva seated in a chariot shining like the sun—21 22