[Advaita-l] Source of quotes

[Ryan Armstrong]

नमस्ते Dear group
I have not had the time to post for a while and have missed your wonderful
company
I have followed some threads when time permitted.

I am posting now requesting help to identify the source of two quotes
I was given an audio recording, so the spelling is mine:
1. तत्सत्त्वे तत्सत्त्वम् इत्यन्वयः ।
तदभावे तदभावः इति व्यतिरेकः॥
I have googled and found a few documents referencing this in ayurveda and
in nyaya philosophy but what I found seemed to be quoting and not a source.
Can someone say where the original is found?

2. This one is at a part of the recording where the quality is not too
good. A passing vehicle. I was told it was from the विष्णुधर्मोत्तर पुराण
and found and online version here:
https://sa.wikisource.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%B7%E0%A5%8D%E0%A4%A3%E0%A5%81%E0%A4%A7%E0%A4%B0%E0%A5%8D%E0%A4%AE%E0%A5%8B%E0%A4%A4%E0%A5%8D%E0%A4%A4%E0%A4%B0%E0%A4%AA%E0%A5%81%E0%A4%B0%E0%A4%BE%E0%A4%A3%E0%A4%AE%E0%A5%8D

But as much as I searched the text for the different words and
combinations, I could not find anything similar.
Here is what I heard:
रमते सर्भूते सुस्तौरेश्चरिश्च ...अन्तरात्मस्वरुपेण...रमुच्यते गच्छति
It is used to describe The Holy Name of Rama and is quoted in conjunction
with a verse from the Rama Tapini Upanishad (1.6)

Any assistance would be very much appreciated.
-- 

Regards

Ryan Armstrong
+27 82 852 7787
ryanarm at gmail.com