Man Lā Yaḥḍuruh al-Faqīh
Hadith 12841292 - وَ سُئِلَ أَبُو عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: عَنْ صَلاَةِ اَلنَّافِلَةِ بِالنَّهَارِ فِي سَفَرٍ فَقَالَ «لَوْ صَلَحَتِ اَلنَّافِلَةُ فِي اَلسَّفَرِ تَمَّتِ اَلْفَرِيضَةُ.
Hadith.1292 - Imam Jafar ibn Muhammad Al-Sadiq (as) was asked about performing the supererogatory (nafilah) prayers during the day while traveling.
Imam (as) said: "If it were appropriate to perform the nafilah (supererogatory) prayers during travel, then the obligatory (fardh) prayers would have been completed (in full)”.