Is this a hidden gem or bidah?

Never came across this in my life.Sorry for the tiny letters i could hardly read it myself.Is it true or a bidah?
If its true then enjoy it guys )

What is Thana,Tawwuz and Tasmiyah btw ?


(click on it,then right click,open image in a new tab,then you can zoom in and read it better)

Assalam o alaikum rahmatullahi wa Barakatuhu

Scholars have different opinions about the salat.

https://islamqa.info/en/answers/145112/salat-al-tasbeeh

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[TR][TD]Salat al-Tasbeeh - Islam Question & Answer
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But in sunnah.com it says sahih by sheikh albani.