Thumma afāḍa indicates the next stage: collective departure. Qabla ṭulūʿ al-shams identifies its timing; ḥattā yaʾtū Minan its destination.
The complete sequence is Maghrib and Isha at Muzdalifah, the night there, Fajr after true dawn, the standing and dua, and departure for Mina before sunrise.