حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، أَنَّهُ كَانَ يَقُولُ مَنْ أَدْرَكَ مِنْ صَلاَةِ الْجُمُعَةِ رَكْعَةً فَلْيُصَلِّ إِلَيْهَا أُخْرَى . قَالَ ابْنُ شِهَابٍ وَهِيَ السُّنَّةُ . قَالَ مَالِكٌ وَعَلَى ذَلِكَ أَدْرَكْتُ أَهْلَ الْعِلْمِ بِبَلَدِنَا وَذَلِكَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ أَدْرَكَ مِنَ الصَّلاَةِ رَكْعَةً فَقَدْ أَدْرَكَ الصَّلاَةَ " . قَالَ مَالِكٌ فِي الَّذِي يُصِيبُهُ زِحَامٌ يَوْمَ الْجُمُعَةِ فَيَرْكَعُ وَلاَ يَقْدِرُ عَلَى أَنْ يَسْجُدَ حَتَّى يَقُومَ الإِمَامُ أَوْ يَفْرُغَ الإِمَامُ مِنْ صَلاَتِهِ إِنَّهُ إِنْ قَدَرَ عَلَى أَنْ يَسْجُدَ إِنْ كَانَ قَدْ رَكَعَ فَلْيَسْجُدْ إِذَا قَامَ النَّاسُ وَإِنْ لَمْ يَقْدِرْ عَلَى أَنْ يَسْجُدَ حَتَّى يَفْرُغَ الإِمَامُ مِنْ صَلاَتِهِ فَإِنَّهُ أَحَبُّ إِلَىَّ أَنْ يَبْتَدِئَ صَلاَتَهُ ظُهْرًا أَرْبَعًا .
Yahya related to me from Malik that Ibn Shihab used to say, "Someone who catches a raka of the jumua prayer should pray another onewith it." Ibn Shihab said, "That is the sunna." Malik said,"I saw the people of knowledge in our city doing that. That is becausethe Messenger of Allah, may Allah bless him and grant him peace, said,'Whoever catches a raka of the prayer has caught the prayer.' " Malik said, concerning some one who was in a crowd on the day ofjumua and did the ruku but was not able to go into sajda until theimam had risen or finished his prayer, "If he is able to do the sajdaand has already done the ruku then he should do the sajda when thepeople stand up. If he is unable to do thesajda until after the imamhas finished the prayer, then I prefer that he begins the prayeragainand does the four rakas of dhuhr." Translation Not Available
Book Ref: Muwatta Imam Malik Book 5 Hadith 237
Web Ref: Muwatta Imam Malik Book 5 Hadith 12