Can anyone share the source of famous sloka gange cha yamune chaiva?

Question

Famous sloka for water purification or during bathing:

गङ्गे च यमुने चैव गोदावरि सरस्वति ।
नर्मदे सिन्धु कावेरि जलेऽस्मिन् संनिधिं कुरु ॥

Can anyone share the source of this sloka?
Based on my google search, it's from *ahnika sutravali verse 106*.
I am not able to find the exact text.

Answer 1

It is from Brahmavaivarta purana

गङ्गे च यमुने चैव गोदावरि सरस्वति ।।

नर्मदे सिन्धु कावेरि जलेऽस्मिन्सन्निधिं कुरु ।। ६६ ।।

Answer 2

The shlok

गङ्गे च यमुने चैव गोदावरि सरस्वति।

नर्मदे सिन्धुकावेरि जलेऽस्मिन्सन्निधिं कुरु

maybe found in the Naradiy Puran also.

gaṅge ca yamune caiva godāvari sarasvati /

narmade siṃdhukāveri jale 'sminsannidhiṃ kuru //

NarP_1,27.33 //

Refer the link here = http://gretil.sub.uni-goettingen.de/gretil/corpustei/transformations/html/sa_nAradapurANa.htm