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:422-596bNāfiʿ
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السيوطي:٤٢٢-٥٩٦b

"عَنْ نَافِعٍ قَالَ: كَانَ ابْنُ عُمَرَ إِذَا سُبِقَ بِشَىْءٍ مِنَ الصَّلاَةِ، فَإِذَا سَلَّمَ الإِمَامُ قَامَ فَقَضَى مَا فَاتَهُ، وَإذَا لَمْ يُسْبَقْ بِشَىْءٍ لَمْ يَقُمْ حتَّى يَقُومَ الإِمَامُ".  

[عب] عبد الرازق