The Prophet (peace and blessings be upon him) said:
"Indeed, I know a stone in Makkah that used to greet me with salam before I was sent as a prophet."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 2487
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم م ت] عن جابر بن سمرة. مختصر مسلم ١٥٢٨.