say bring forward your witnesses who can testify that allah has forbidden this. then if they testify do not testify with them. and do not follow the vain desires of those who belie our ayat and such as believe not in the hereafter and they hold others as equal with their lord.
قل هلم شهداءكم الذين يشهدون أن الله حرم هذا فإن شهدوا فلا تشهد معهم ولا تتبع أهواء الذين كذبوا بآياتنا والذين لا يؤمنون بالآخرة وهم بربهم يعدلون