The Great Epic of the Bhārata dynasty 3.81.171

3.81.171

abhivādya tato yakṣaṃ dvārapālamarantukam |
koṭirūpamupaspṛśya labhedbahu suvarṇakam || 171 ||

The person that performeth a Sraddha there, after having bathed in that tirtha, obtaineth the merit that one earneth by properly celebrating a thousand horse-sacrifices. Whatever sins a man or woman committeth, are, without doubt, all destroyed as soon as one batheth in that tirtha. Bathing there one also ascendeth to the abode of Brahma on the lotus-coloured tar. Bathing next in Koti-tirtha, after having worshipped the Yaksha doorkeeper, Machakruka, one obtaineth the merit of giving away gold in abundance. Near to this, O best of the Bharatas, is a tirtha called Gangahrada.