Prayer During Travel
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 59
مَا رَوَاهُ مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ بَزِيعٍ عَنْ أَبِي اَلْحَسَنِ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنِ اَلصَّلاَةِ بِمَكَّةَ وَ اَلْمَدِينَةِ يُقَصَّرُ أَوْ يُتَمُّ قَالَ «قَصِّرْ مَا لَمْ تَعْزِمْ عَلَى مُقَامِ عَشَرَةِ أَيَّامٍ.
It is narrated from Muhammad ibn Isma'il ibn Bazi' from Imam al-Ridha عليه السلام that He said: I asked him about the prayer in Mecca and Medina, whether it should be shortened or completed. Imam عليه السلام said: "Shorten it unless you intend to stay for ten days”.
- Ṣaḥīḥ al-Faqīh