Sunan an Nasai
2916
Sahih Isnaad+2

It was narrated that Usmah said:"The Messenger of Allah came out of the House and prayed two Rakahs in front of the Kabah, then he said: 'This is the Qiblah

Sahih IsnaadAbu Ghuddah
Sahih IsnaadAl-Albani