Sunan an-Nasa'i 2913
سنن النسائي#2913SahihIt was narrated that Ibn Abbas said:"The Prophet did not pray inside the Kabah, but he recited the Takbir in its corners." (Sahih) Chatper 131. Dhikr And Supplication Inside The House
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 24:296