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.
suyuti:702-100bal-Ḥasan

[Machine] al-Ḥasan said: Banu Qurayẓah were judged by Sād b. Muʿādh, so the Messenger of Allah ﷺ killed three hundred of them, and he said to the remaining: Go to the land of the maḥshar (final gathering), for we will join you there, meaning the land of Sham, and they were made to travel there.  

Ibn ʿAsākir’s Tārīkh
السيوطي:٧٠٢-١٠٠b

"عَنِ الحَسَنِ قَالَ: نَزَلَ بَنُو قريظة عَلَى حُكْمِ سَعْدِ بْنِ مُعَاذٍ، فَقَتَلَ رَسُولُ اللَّهِ ﷺ منْهُمْ ثلاثمائة، وَقَالَ لِبَقيَّتِهِمْ: انْطَلِقُوا إلى أَرْضِ المَحْشَرِ فَإِنَّا في آثَارِكُمْ يَعْنِى أَرْضَ الشَّامِ فسَيَّرَهُمْ إِلَيْهَا".  

[كر] ابن عساكر في تاريخه