Muwatta Malik 17

Yahya related to me from Malik that he had heard that Abu Hurayra used to say, "Whoever catches the ruku has caught the sajda and whoever misses the recitation of the umm al-Qur'an has missed much good."

وَحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ أَبَا هُرَيْرَةَ، كَانَ يَقُولُ مَنْ أَدْرَكَ الرَّكْعَةَ فَقَدْ أَدْرَكَ السَّجْدَةَ وَمَنْ فَاتَهُ قِرَاءَةُ أُمِّ الْقُرْآنِ فَقَدْ فَاتَهُ خَيْرٌ كَثِيرٌ ‏.‏

If one is in time for the rak'a he is credited with the sajda, but if one misses the recitation of Umm al- Qur'an (Al-Qur’an; 1) a great amount of good has passed him by. Malik transmitted it.

وَعَن أبي هُرَيْرَة أَنَّهُ كَانَ يَقُولُ: «مَنْ أَدْرَكَ الرَّكْعَةَ فَقَدْ أَدْرَكَ السَّجْدَةَ وَمَنْ فَاتَتْهُ قِرَاءَةُ أُمِّ الْقُرْآنِ فقد فَاتَهُ خير كثير» . رَوَاهُ مَالك

Narrated by Abu Hurayrah