Mishkat al-Masabih
Abu Huraira reported God’s Messenger as saying, “If anyone is in time for a rak‘a in the prayer along with the imam he has said the whole prayer.” (Bukhari and Muslim.)
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: مَنْ أَدْرَكَ رَكْعَةً مِنَ الصَّلَاةِ مَعَ الإِمَام فقد أدْرك الصَّلَاة كلهَا "
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