Chapter: Penjelasan bahwa awal waktu maghrib adalah saat terbenamnya matahari
A chapter in the Book of Mosques and Places of Prayer, Shahih Muslim. 2 hadith. Chapter title in Indonesian.
أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يُصَلِّي الْمَغْرِبَ إِذَا غَرَبَتْ الشَّمْسُ وَتَوَارَتْ بِالْحِجَابِ
Salama b. al-Akwa' reported that the Messenger of Allah (may peace be upon him) used to say the evening prayer when the sun had set and disappeared (behind the horizon).
Muslim 1006
و حَدَّثَنَا مُحَمَّدُ بْنُ مِهْرَانَ الرَّازِيُّ حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ حَدَّثَنَا الْأَوْزَاعِيُّ حَدَّثَنِي أَبُو النَّجَاشِيِّ قَالَ سَمِعْتُ رَافِعَ بْنَ خَدِيجٍ يَقُولُا كُنَّا نُصَلِّي الْمَغْرِبَ مَ…
We used to observe the evening prayer with the Messenger of Allah (may peace be upon him) and then one of us would go away and he could see the (distant) place where his arrow would fall. A hadith like this, i. e." We used to observe evening prayer...." so on…
Muslim 1007