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.
malik:16-17Mālik > Saʾal Ibn Shihāb > al-a man Yudrik Baʿḍ al-Takbīr > al-Janāzah And Yafūtuh Baʿḍuh

Yahya related to me that Malik asked Ibn Shihab about a man who caught some of the takbirs said over the corpse and missed the rest, and Ibn Shihab said, "He completes what he has missed."  

مالك:١٦-١٧وَحَدَّثَنِي عَنْ مَالِكٍ أَنَّهُ سَأَلَ ابْنَ شِهَابٍ عَنِ الرَّجُلِ يُدْرِكُ بَعْضَ التَّكْبِيرِ عَلَى الْجَنَازَةِ وَيَفُوتُهُ بَعْضُهُ

فَقَالَ يَقْضِي مَا فَاتَهُ مِنْ ذَلِكَ