Dua When Beginning Tawaf

اللّهُمّ إيْمَاناً بِكَ، وَتَصْدِيْقاً بِكِتَابِكَ وَسُنّةِ نَبِيِّكَ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ

Allāhumma īmānan bika wa taṣdīqan bi kitābik wa sunnati nabiyyika ṣalla l-lāhu ‘alayhi wa sallam

O Allah! Out of faith in You, conviction in Your book and Your Prophet’s way.