Man Lā Yaḥḍuruh al-Faqīh
Hadith 668668 - وَ سَأَلَهُ سَمَاعَةُ بْنُ مِهْرَانَ: عَنِ اَلصَّلاَةِ بِاللَّيْلِ وَ اَلنَّهَارِ إِذَا لَمْ تُرَ اَلشَّمْسُ وَ اَلْقَمَرُ وَ لاَ اَلنُّجُومُ فَقَالَ «تَجْتَهِدُ رَأْيَكَ وَ تَعَمَّدُ اَلْقِبْلَةَ بِجُهْدِكَ.
Hadith.668 - Sama’a ibn Mehran asked Him about praying during the day or night when neither the sun, the moon, nor the stars are visible.
Imam (as) replied: "You exert your own judgment and strive to determine the Qiblah (direction of prayer) to the best of your ability."