A pilgrim is at Muzdalifah before Fajr but absent from dawn until sunrise; which issue arises?

Book of Hajj: Prayers, Standing at Muzdalifah, and Departure to Mina

• Combining Dhuhr and Asr at Arafat
• Ramal during arrival tawaf
• Extent of shaving at Mina
• Performance of the wajib dawn standing