3357 - وَ رُوِيَ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنِ اَلْبَاقِرِ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ : فِي اَلشَّهَادَةِ عَلَى شَهَادَةِ اَلرَّجُلِ وَ هُوَ بِالْحَضْرَةِ فِي اَلْبَلَدِ قَالَ "نَعَمْ وَ لَوْ كَانَ خَلْفَ سَارِيَةٍ وَ يَجُوزُ ذَلِكَ إِذَا كَانَ لاَ يُمْكِنُهُ أَنْ يُقِيمَهَا لِعِلَّةٍ تَمْنَعُهُ مِنْ أَنْ يَحْضُرَ وَ يُقِيمَهَا فَلاَ بَأْسَ بِإِقَامَةِ اَلشَّهَادَةِ عَلَى شَهَادَتِهِ".
Hadith.3357 - Muhammad ibn Muslim narrated from Al-Baqir, Abu Ja'far Imam Muhammad ibn Ali 
regarding testimony upon the testimony of a man who is present in the town.
Imam said: "Yes, even if he is behind a column. It is permissible if he is unable to present it himself due to some excuse preventing him from attending and presenting it. In such a case, there is no harm in establishing testimony based on his testimony."
