السلام عليكم ورحمة الله وبركاته أحسنَ اللهُ إليكم I sell products and some clients pay €15 cash or via Payconiq for a €14.99 item (marketing pricing). Do I need to return the 1–3 cents change, or can I keep it since they are aware of the pricing strategy? I just want to be fair in my business

Ustadh AbdulAziz al-Haqqan
It is allowed that they pay less if they use the bank card.