What to say at the Black Stone (start of each round)
Umrah, Hajj and Tawaf duas
What to say at the Black Stone (start of each round)
At the start of every round of tawaf
اللَّهُ أَكْبَرُ
Allahu akbar.
Allah is the Greatest. Face the Black Stone, point to it with your right hand (or touch or kiss it if easy, without pushing anyone) and say "Allahu akbar".
Reference: al-Bukhari 1613 (the Prophet ﷺ pointed to it and said takbir); "Bismillah, Allahu akbar" is reported from Ibn ‘Umar (al-Bayhaqi)
