Muwatta Malik 18

Yahya related to me from Malik that he had heard that Abdullah ibn Umar and Zayd ibn Thabit used to say, "Whoever catches the raka`ah has caught the sajda."

وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، وَزَيْدَ بْنَ ثَابِتٍ، كَانَا يَقُولاَنِ مَنْ أَدْرَكَ الرَّكْعَةَ فَقَدْ أَدْرَكَ السَّجْدَةَ ‏.‏

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