ثُمَّ تَبَيَّنَ أَنَّ الْفَجْرَ كَانَ قَدْ طَلَعَ، أَوْ أَنَّ الشَّمْسَ لَمْ تَغْرُبْ
Translation: Then it became clear that dawn had already arrived, or that the sun had not yet set.
“Thumma tabayyana” means the actual timing became established later. In the first case dawn had in fact appeared; in the second, sunset had not yet occurred.
The legal consequence depends on food or drink having been taken during the true hours of fasting.
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Kitab al-Sawm: Mistaken Dawn or Sunset, Qada and Kaffarah
ثُمَّ تَبَيَّنَ أَنَّ الْفَجْرَ كَانَ قَدْ طَلَعَ، أَوْ أَنَّ الشَّمْسَ لَمْ تَغْرُبْ
Translation: Then it became clear that dawn had already arrived, or that the sun had not yet set.
“Thumma tabayyana” means the actual timing became established later. In the first case dawn had in fact appeared; in the second, sunset had not yet occurred.
The legal consequence depends on food or drink having been taken during the true hours of fasting.