Waḍaʿna ʿiṣiyya al-ḥāḍir literally depicts putting down a camper’s staff. In context it denotes making camp and settling for a time. The meaning is reached through a closely associated physical action, a useful example of kināyah (indirect expression).
Al-mutakhayyim emphasizes a person who establishes a tent or camp. The following verse’s thumma jazaʿnahu gives the counter-image of setting out again.