Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
suyuti:2-668bIbrāhīm > Katab ʿUmar > ʿUtbah b. Farqad Idhā Raʾaytum al-Hlāl from Awwal al-Nahār Faʾfṭirūā
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السيوطي:٢-٦٦٨b

"عَنْ إِبْرَاهِيمَ قَالَ: كَتَبَ عُمَرُ إِلَى عُتْبَةَ بْنِ فَرْقَدٍ: إِذَا رَأَيْتُمُ الهلَالَ مِنْ أَوَّلِ النَّهَارِ فَأفْطِرُوا فَإنَّهُ مِنَ اللَّيْلَةِ الْمَاضِيَةِ، وَإِذَا رَأَيْتُمُوهُ مِنْ آخِرِ النَّهَارِ فَأَتِمُّوا صَوْمَكُمْ، فَإِنَّه لِلَيْلَةٍ مُقْبِلَةٍ".  

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