وَمَنْ جَامَعَ نَاسِيًا كَمَنْ جَامَعَ عَامِدًا
Translation: One who has intercourse forgetfully is treated like one who does so deliberately.
Nasiyan means forgetfully; ʿamidan means deliberately. Al-Quduri treats the two alike for the legal consequences of intercourse during these pilgrimage rites.
This clause concerns intercourse while in Hajj or Umrah. It must not be generalized to fasting, prayer, or every situation involving forgetfulness.