ANSWER:

This is baseless. 

There’s no specific dua to be recited nor is there any special virtue when you look at Kaba for the first time. 

I will be performing Hajj this year in sha ALLAH. Which dua we should ask Allah when we gaze Kabba for the 1st time? I read this dua in hadees Allahuma zid hazal baita tashrefan…some people say to ask Allah subhan wa ta’ala accept my all dua in this hajj or accept my all dua’s which I ask in rest of life