3358 - وَ رَوَى عَمْرُو بْنُ جُمَيْعٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَنْ أَبِيهِ عَلَيْهِمَا اَلسَّلاَمُ قَالَ : "أَشْهِدْ عَلَى شَهَادَتِكَ مَنْ يَنْصَحُكَ" قَالُوا أَصْلَحَكَ اَللَّهُ كَيْفَ يَزِيدُ وَ يَنْقُصُ قَالَ "لاَ وَ لَكِنْ مَنْ يَحْفَظُهَا عَلَيْكَ". وَ لَا تَجُوزُ شَهَادَةٌ عَلَى شَهَادَةٍ عَلَى شَهَادَةٍ.
Hadith.3358 - Amr ibn Jumay' narrated from Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq 
from his father, Imam Muhammad ibn Ali Al-Baqir :
Imam said: "Let someone trustworthy bear witness to your testimony."
They asked: 'May Allah (swt) keep you well, how can it increase or decrease?'
Imam replied: "No, but it should be someone who preserves it for you."
Imam also said: "It is not permissible to testify upon a testimony that is based on another testimony."
