The Funeral Prayer (Salat Al-Janazah)
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 26
وَ رَوَى اَلْحَلَبِيُّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ - «إِذَا أَدْرَكَ اَلرَّجُلُ اَلتَّكْبِيرَةَ وَ اَلتَّكْبِيرَتَيْنِ مِنَ اَلصَّلاَةِ عَلَى اَلْمَيِّتِ فَلْيَقْضِ مَا بَقِيَ مُتَتَابِعاً.
Al-Halabi narrated from Imam Jafar ibn Muhammad Al-Sadiq عليه السلام that He said: "If a person catches one or two takbirs of the funeral prayer over the deceased, they should complete the remaining takbirs consecutively."
- Ṣaḥīḥ al-Faqīh