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:2-2783b
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السيوطي:٢-٢٧٨٣b

"عن الحكم بن عبد الرحمن بن أَبى الْعَصْمَاءِ الخَثْعَمِىِّ -وكان ممن شهد فتح قَيسَارِيَّةَ- قال: حَاصَرَهَا مُعَاوِيَةُ سَبع سنين إِلَّا أَشْهُرًا ثُمَّ فَتَحَهَا، (وَبَعَثُوا بِفَتْحِهَا إِلَى عَمرَ بنِ الْخَطَّابِ، فقام عمر فنادى: أَلَا إِنَّ قَيْسَارِيَّةَ فُتِحَتْ قَسْرًا".  

أبو عبيد