(4) Prayer
كتاب الصلاة
(23c) Chapter: Times when Prayer is Prohibited - Section 3
(22) باب أوقات النهي - الفصل الثالث
Mishkat al-Masabih 1049 
Abu Basra al-Ghifari said:
God’s Messenger led us in the afternoon prayer at al-Mukhammas and said, “This is a prayer which was proposed to your predecessors, but they neglected it. Everyone who keeps observing it will have a double reward, but there is no prayer after it till ash-shahid rises.” Ash-shahid is the star.* * No particular star is intended. The meaning is that the prayer should be observed when stars become visible. Muslim transmitted it.
وَعَن أبي بصرة الْغِفَارِيّ قَالَ: صَلَّى بِنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِالْمُخَمَّصِ صَلَاةَ الْعَصْرِ فَقَالَ: «إِنَّ هَذِهِ صَلَاةٌ عُرِضَتْ عَلَى مَنْ كَانَ قَبْلَكُمْ فَضَيَّعُوهَا فَمَنْ حَافَظَ عَلَيْهَا كَانَ لَهُ أَجْرُهُ مَرَّتَيْنِ وَلَا صَلَاةَ بَعْدَهَا حَتَّى يَطْلُعَ الشَّاهِدُ» . وَالشَّاهِد النَّجْم. رَوَاهُ مُسلم
 صَحِيح  (الألباني)حكم :
Reference : Mishkat al-Masabih 1049
In-book reference : Book 4, Hadith 467