They could have shown him averting his face from hers and walking away.
They could have shown Arshad taking zoya to aditya
But what they did show was waseem pushing her away only to be caught by aditya. Indirectly it was waseem who handed zoya over to aditya
I feel like maybe this particular scene foreshadows a time in future when, unlike yash, aditya will end up winning waseem's approval and that waseem will eventually wholeheartedly accept the marriage. Waseem might give his daughter and aditya his full approval by placing her hand within aditya's himself.