وَإِذَا قَدِمَ الْمُسَافِرُ، أَوْ طَهُرَتِ الْحَائِضُ فِي بَعْضِ النَّهَارِ: أَمْسَكَا عَنِ الطَّعَامِ وَالشَّرَابِ بَقِيَّةَ يَوْمِهِمَا.
Translation: When a traveller arrives, or a menstruating woman becomes pure during part of the day, they refrain from food and drink for the remainder of that day.
Quduri combines two changes of status: a traveller arrives and a menstruating woman becomes pure during the day. Where the special abstention ruling applies, they refrain from eating and drinking for the remaining daylight.
Such abstention does not in itself prove that a complete obligatory fast was valid from dawn, especially when menstruation ended only after dawn.