Skandapurana 5.57.15

5.57.15

.. bhīṣma uvāca .. ..
tadarthaṃ vada me brahmanprāyaścittaṃ viśuddhaye ..
tapo vā yadi vā dānaṃ vrataṃ niyamameva vā .. 15 ..

Bhīṣma said: / “For that reason, tell me, O brahmin, the expiation for purification— / whether austerity, or a gift, a vow, or a religious observance.”