Man Lā Yaḥḍuruh al-Faqīh
Hadith 13071315 - وَ سَأَلَ سَمَاعَةُ بْنُ مِهْرَانَ أَبَا اَلْحَسَنِ اَلْأَوَّلَ عَلَيْهِ اَلسَّلاَمُ: عَنْ وَقْتِ صَلاَةِ اَللَّيْلِ فِي اَلسَّفَرِ فَقَالَ «مِنْ حِينِ تُصَلِّي اَلْعَتَمَةَ إِلَى أَنْ يَنْفَجِرَ اَلصُّبْحُ.
Hadith.1315 - Sama'a ibn Mehran asked Abu al-Hasan the First (as) about the timing of the night prayer during travel.
Imam (as) said: "From the time you perform the 'Atamah (Isha, the night prayer) until the break of dawn (Fajr)."