«إِلَى ذُرَاكُمْ شَعِثًا مُغْبَرًّا»
Into your shelter, dishevelled and covered with dust.
Dhurā evokes protection or refuge. Shaʿith describes a dishevelled appearance, while mughbarr indicates dust covering the person.
The previous line made night threatening; this one gives visible evidence of the stranger's hardship. Together they make his plea for lodging feel immediate.