Al-Kāfi

Hadith 1793
3ـ الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنِ الْحَسَنِ بْنِ عَلِيٍّ الْوَشَّاءِ عَنْ حَمَّادِ بْنِ عُثْمَانَ عَنْ أَبِي بَصِيرٍ قَالَ سَمِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلام) يَقُولُ إِنْ كُنْتَ فِي أَرْضِ مَخَافَةٍ فَخَشِيتَ لِصّاً أَوْ سَبُعاً فَصَلِّ عَلَى دَابَّتِكَ.
3. Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from al-Hassan ibn Ali al-Washsha’ from Hammad ibn ‘Uthaman from abu Basir who has said the following: “I once heard abu ‘Abd Allah (a.s.), say, ‘If you are in a land where you are afraid of thieves or beasts, perform Salah (prayer) on your stumper.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī