Buraida reported that when the Prophet (ﷺ) entered the market he said, “In the name of God. O God, I ask You for the good of this market and the good of what it contains, and I seek refuge in You from its evil and the evil of what it contains. O God, I seek refuge in You lest I get a bad bargain in it.” Baihaqi transmitted it in <i>[Kitab] ad-Da‘ awat al-kabir</i>.

وَعَن بُرَيْدَة قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا دَخَلَ السُّوقَ قَالَ: «بِسْمِ اللَّهِ اللَّهُمَّ إِنِّي أَسْأَلُكَ خَيْرَ هَذِهِ السُّوقِ وَخَيْرِ مَا فِيهَا وَأَعُوذُ بِكَ مِنْ شَرِّهَا وَشَرِّ مَا فِيهَا اللَّهُمَّ إِنِّي أَعُوذُ بِكَ أَنْ أُصِيبَ فِيهَا صَفْقَةً خَاسِرَةً» . رَوَاهُ الْبَيْهَقِيُّ فِي الدَّعَوَاتِ الْكَبِير