وَمَنْ أَفَاضَ مِنْ عَرَفَةَ قَبْلَ الْإِمَامِ: فَعَلَيْهِ دَمٌ.
Translation: Whoever departs from Arafat before the imam owes dam.
Afada means departing from the standing/gathering. Al-Quduri stipulates dam for departure before the imam in the classical Hajj arrangement, tied to the proper timing and sequence of standing at Arafat.
The historic role of the pilgrimage imam is not automatically identical to any modern group leader; contemporary application needs juristic detail.