Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:21188Abū al-Ḥusayn b. al-Faḍl al-Qaṭṭān > ʿAbdullāh b. Jaʿfar > Yaʿqūb b. Sufyān > al-Ḥumaydī > Sufyān > al-Aswad b. Qays > Kulthūm b. al-Aqmar > Shurayḥ

[Machine] I do not allow the testimony of a hidden one.  

البيهقي:٢١١٨٨أَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ الْفَضْلِ الْقَطَّانُ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرٍ ثنا يَعْقُوبُ بْنُ سُفْيَانَ ثنا الْحُمَيْدِيُّ ثنا سُفْيَانُ عَنِ الْأَسْوَدِ بْنِ قَيْسٍ عَنْ كُلْثُومِ بْنِ الْأَقْمَرِ عَنْ شُرَيْحٍ قَالَ

لَا أُجِيزُ شَهَادَةَ مُخْتَبِئٍ