Fiqh-us-Sunnah Volume 4, Funerals and Dhikr, Fiqh 4.046.

Section : Arriving Late for Funeral Prayer.

A person who misses a part of a funeral prayer should make up the missed takbirs – making them consecutively. This is preferable, but if he cannot do it there is no harm. Ibn ‘Umar, Al-Hasan, Ayyub Al-Sukhtiani, and Al-Awza’i are of the opinion that such a person is not required to repeat the missed takbirs, and he should finish his prayer with the salutations led by the imam.

Ahmad said: “If he cannot make the missed takbirs, there is no harm.” The author of Al-Mughni prefers this opinion and remarks: “It is supported by a saying of Ibn ‘Umar and there is nothing on record from the Companions of the Prophet (may Allah be pleased with them) to contradict it. It is reported by ‘Aishah that she said to the Prophet, peace be upon him, “O Allah’s Messenger, sometimes when I offer a funeral prayer, I cannot hear some of the takbirs by the imam?” He replied: “Say the takbir that you hear and do not worry about the ones that you miss. You do not have to repeat these later on.” This statement is quite explicit. These are consecutive – uninterrupted – takbirs and, if missed, they need not be repeated like the ones in the ‘Eid prayer.