What is the ruling on prayer if there is a transparent glass wall between the worshipper and someone passing in front of him?

The passerby is not sinful if there is a glass wall between them and the worshipper, because the wall acts as a barrier (sutrah) for the worshipper. It is not a condition that the barrier obscure the person passing by. Anything the worshipper places in front of them, such as a stick or a thread, suffices as a barrier. The proof for this is the saying of the Prophet, peace and blessings be upon him: "When one of you prays, let him place something in front of his face. If he does not find anything, let him set up a stick. If he does not have a stick with him, then let him draw a line, and then whatever passes in front of him will not harm him."