من لا يحضره الفقيه, volume 1, page 453

Hadith.1313 - Al-Halabi reported from Imam Jafar ibn Muhammad Al-Sadiq (as) who said: "If you fear that you will not be able to wake up at the end of the night, or if you have an ailment or are afflicted by cold, then pray and perform the Witr prayer at the beginning of the night while traveling."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1314 - Ali ibn Sa'id asked Imam Jafar ibn Muhammad Al-Sadiq (as) about performing the night prayer and Witr prayer during travel at the beginning of the night. Imam (as) said: "Yes."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

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)."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.1316 - Hariz reported from someone who narrated from Imam Muhammad ibn Ali Al-Baqir (as) that he did not see any problem with praying while walking, as long as he was not driving the camels.

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.