Barakallahu feek shaykh I went to buy a Kitab the owner said I must get cash I said ok I went to the card machine it didn't work I think so I left I get doubts I owe him money but I never took the book did me saying ok mean I am forced to pay for this kitab? I got it elsewhere. Jazakallah kheir

Ustadh AbdulAziz al-Haqqan

If you said let me see or something like that then it is ok, but if the deal is done then you should buy it. You can ask for his permission to not buy it and most probably he will say yes no worries and that is called iqalah which makes it not binding upon you.