Hadith 771
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Hadith.3888 - He wrote to Imam (as) asking whether it is permissible for a witness, who was called to testify about the sale of an estate without specifying its boundaries, to later testify to the boundaries based on the statements of other people from the village who identified and confirmed the boundaries of the estate.
The question was whether this witness, who initially testified to the sale, could now testify to the boundaries based on their statements.
Imam (as) responded: "Do not testify except based on the statement of the owner of the property, if Allah (swt) wills."
3888 - وَ كَتَبَ إِلَيْهِ هَلْ يَجُوزُ أَنْ يَشْهَدَ عَلَى اَلْحُدُودِ إِذَا جَاءَ قَوْمٌ آخَرُونَ مِنْ أَهْلِ تِلْكَ اَلْقَرْيَةِ فَشَهِدُوا أَنَّ حُدُودَ هَذِهِ اَلضَّيْعَةِ اَلَّتِي بَاعَهَا اَلرَّجُلُ هِيَ هَذِهِ فَهَلْ يَجُوزُ لِهَذَا اَلشَّاهِدِ اَلَّذِي أَشْهَدَهُ بِالضَّيْعَةِ وَ لَمْ يُسَمِّ اَلْحُدُودَ أَنْ يَشْهَدَ بِالْحُدُودِ بِقَوْلِ هَؤُلاَءِ اَلَّذِينَ عَرَّفُوا هَذِهِ اَلضَّيْعَةَ وَ شَهِدُوا لَهُ أَمْ لاَ يَجُوزُ لَهُمْ أَنْ يَشْهَدُوا وَ قَدْ قَالَ لَهُمُ اَلْبَائِعُ اِشْهَدُوا بِالْحُدُودِ إِذَا أَتَوْكُمْ بِهَا فَوَقَّعَ عَلَيْهِ اَلسَّلاَمُ " لاَ تَشْهَدْ إِلاَّ عَلَى صَاحِبِ اَلشَّيْءِ وَ بِقَوْلِهِ إِنْ شَاءَ اَللَّهُ".