Matsya Purana 193.63

193.63

tatra snātvā naro rājannupavāsaparāyaṇaḥ.
kāñcanena vimānena brahmaloke mahīyate .. 193.63

The sacred tīrtha is on the banks of the Narmadâ One who hears the glory of this place, goes to the realm of Rudra on being liberated from all sins Beyond it, is the famous Gautameśvara tīrtha where by bathing and keeping up fast one goes to Brahmaloka seated on a golden chariot—61 63