Sahih Muslim Book - 13, Hadith - 2559

وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى أَخْبَرَنَا هُشَيْمٌ عَنْ أَبِى إِسْحَاقَ الشَّيْبَانِىِّ عَنْ عَبْدِ اللَّهِ بْنِ أَبِى أَوْفَى - رضى الله عنه - قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ -صلى الله عليه وسلم- فِى سَفَرٍ فِى شَهْرِ رَمَضَانَ فَلَمَّا غَابَتِ الشَّمْسُ قَالَ « يَا فُلاَنُ انْزِلْ فَاجْدَحْ لَنَا ». قَالَ يَا رَسُولَ اللَّهِ إِنَّ عَلَيْكَ نَهَارًا. قَالَ « انْزِلْ فَاجْدَحْ لَنَا ». قَالَ فَنَزَلَ فَجَدَحَ فَأَتَاهُ بِهِ فَشَرِبَ النَّبِىُّ -صلى الله عليه وسلم- ثُمَّ قَالَ بِيَدِهِ « إِذَا غَابَتِ الشَّمْسُ مِنْ هَا هُنَا وَجَاءَ اللَّيْلُ مِنْ هَا هُنَا فَقَدْ أَفْطَرَ الصَّائِمُ ».

It was narrated that Abdullah bin Abi Awfa said: “We were with the Messenger of Allah (SAW) on a journey during the month of Ramadan. When the sun set he said: ‘O so-and-so, dismount and mix something for us.’ He said: ‘O Messenger of Allah, it is still day.’ He said: ‘Dismount and mix something for us.’ So he dismounted and mixed something and brought it to him. The Prophet drank some, then he said, gesturing with his hand: ‘When the sun sets from here, and the nights comes from here, then I is time for the fasting person to break his fast.’”