Upon entering the marketplace, it is recommended for one to read the following supplication [in green]:

On the authority of ʿUmar b. al-Khaṭṭāb [who narrated] that the Messenger of Allāh, may the praise and protection of Allāh be upon him, said:
“Whoever enters the marketplace and says, ‘There is none worthy of worship except Allāh alone without any partners, to Him belongs the dominion and to Him belongs all praise, He gives life and causes death, He is the All-Living and does not die, in His Hand is all goodness, and He has power over all things’, Allāh will write a million good deeds for him, and wipe a million evil deeds away from him, and raise a million ranks for him.”
Reported by al-Tirmidhī.
Ḥasan: al-Tirmidhī (3428) and in the Dār al-Taʾṣīl edition (3746). Ibn Mājah (2235). Aḥmad (327). See: Ṣaḥīḥ al-Targhīb wa al-Tarhīb (1694) of al-Albānī.