مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 1176
Prayer
The sunan prayers and their virtues - Section 2
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «إدبار النُّجُوم الركعتان قبل الْفجْر وأدبار السُّجُود الركعتان بعد الْمغرب» . رَوَاهُ التِّرْمِذِيّ
Ibn ‘Abbas reported God’s Messenger as saying, “When the stars set two rak'as should be prayed before the dawn prayer, and after the prostration two rak'as should be prayed after the sunset prayer.” Tirmidhi transmitted it.
Mishkat al-Masabih, 1176ضَعِيف (الألباني)