The sound of the caravan's bell became like a surging floodwave to me, sweeping my frail body far away from the caravan.

Usually, the chiming bell of a caravan signals travelers to gather and journey together toward their destination. But here, the poet is so utterly fragile and weighed down by sorrow that this call didn't guide him; instead, it crashed over him like a violent flash flood, washing his frail body far away from the group. It is a poignant image of extreme vulnerability, where the very summons meant to connect travelers ends up completely isolating a broken soul.