«إذا أقبل الليل من هاهنا وأدبر النهار من هاهنا وغربت الشمس فقد أفطر الصائم» .
(صحيح) … [ق د ت] عن عمر)
It is narrated from the words of ‘Umar bin al-Khattab, may Allah be pleased with him, that the Messenger of Allah (peace and blessings of Allaah be upon him) said:
“When night falls from here, and the day recedes from there, and the sun sets, [1] whoever is fasting (should) break his fast.”
This hadith was narrated by al-Bukhari 1954, Muslim 1100, Abu Dawud 2351, at-Tirmidhi 698.
Sheikh al-Albani called the hadith authentic. See Saheeh al-jami ‘as-saghir 364.
Grade: صحيح
[1] – That is: when night falls from the east, and the day recedes from the west, and the sun completely sinks below the horizon.