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:14300Khālid b. Kathīr > al-Ḍaḥḥāk > ʿAlī

[Machine] "He (the teacher) postpones the lesson for a year. If he (the student) attends, then they continue, but if not, they separate. Abu Abdullah al-Hafiz informed me of this by granting permission. Abu al-Walid narrated to us, from al-Husayn ibn Sufyan, from Abu Bakr, from Abu Khalid, from Muhammad ibn Ishaq, and he mentioned it. With the help of Allah, and Allah knows best."  

البيهقي:١٤٣٠٠وَرَوَى مُحَمَّدُ بْنُ إِسْحَاقَ عَنْ خَالِدِ بْنِ كَثِيرٍ عَنِ الضَّحَّاكِ عَنْ عَلِيٍّ ؓ قَالَ

يُؤَجَّلُ الْعِنِّينُ سَنَةً فَإِنْ وَصَلَ وَإِلَّا فُرِّقَ بَيْنَهُمَا أَنْبَأَنِيهِ أَبُو عَبْدِ اللهِ الْحَافِظُ إِجَازَةً ثنا أَبُو الْوَلِيدِ ثنا الْحُسَيْنُ بْنُ سُفْيَانَ ثنا أَبُو بَكْرٍ ثنا أَبُو خَالِدٍ عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ فَذَكَرَهُ وَبِاللهِ التَّوْفِيقُ وَاللهُ أَعْلَمُ