Whilst we are gathered in the Eid prayer place, one of the brothers stands up, interrupting the takbeer, to say into the microphone a hadith from the Prophet (blessings and peace of Allah be upon him), “Today is the day of revival… Whoever has not paid sadaqat al-fitr let him place it in front of him before the prayer begins… Today Allah will not forgive two who are boycotting one another … (And do not forget) to uphold ties of kinship” Then he resumes the takbeer again.

Praise
be to Allah

Firstly: 

We have previously explained the ruling on saying takbeer in
unison before the Eid prayer, and that it is not prescribed. Please see the
answer to question no. 127851 

Ibn al-Haaj (may Allah have mercy on him) said:

The established Sunnah is to say the takbeer loud enough that
the individual and whoever is next to him can hear it. Doing anything more
than that, to the extent of saying it in a very loud voice, is an innovation
(bid‘ah), because nothing is narrated from the Prophet (blessings and peace
of Allah be upon him) except what is mentioned above. Moreover, they say it
in unison, and that is an innovation, because what is prescribed is only for
each individual to say takbeer by himself and not in unison with anyone
else. End quote. 


Al-Madkhal
(2/285) 

Secondly: 

There is nothing wrong with one person saying the takbeer
into the microphone, without the people following him and reciting in
unison, for the reasons mentioned above. Ibn ‘Uthaymeen (may Allah have
mercy on him) said: 

If it is said to the people: We will delegate it to a
specific individual, the mu’adhdhin or someone else, to recite the takbeer
as prescribed over the loudspeaker without anyone following him and reciting
with him in unison, I do not see anything wrong with that, because it comes
under the heading of raising the voice with the takbeer and reciting it out
loud, and it is a reminder to the heedless and the forgetful. It is
well-known that if one of the people present says the takbeer in a loud
voice, without a loudspeaker, no one will denounce him for that. Similarly,
if he recites the takbeer over the loudspeaker, but without the people
following him and reciting in unison, as if he is prompting them, and they
wait for his takbeer so that they can say takbeer after him in unison, this
is something for which there is no basis in the Sunnah. End quote. 


Majmoo‘ Fataawa wa Rasaa’il Ibn ‘Uthaymeen
(13/987) 

Thirdly: 

There is nothing wrong with interrupting the takbeer and
reminding the people to give zakat al-fitr before the prayer, so that anyone
who has not given it may hasten to give it. The Prophet (blessings and peace
of Allah be upon him) said: “Whoever gives it before the prayer, it is
accepted zakaah, and whoever gives it after the prayer, it is merely
ordinary charity.” Narrated by Abu Dawood (1609) and Ibn Maajah (1827);
classed as hasan by al-Albaani in Saheeh Abi Dawood. 

With regard to quoting weak hadiths or those for which there
is no basis, this is objectionable and is not permissible. Muslim narrated
in the Introduction to his Saheeh (p 7) that al-Mugheerah ibn Shu‘bah
and Samurah ibn Jundub (may Allah be pleased with them both) said: The
Messenger of Allah (blessings and peace of Allah be upon him) said: “Whoever
narrates a hadith from me knowing that it is false is one of the liars.” 

This is an emphatic warning against lying and having any
involvement in lying, and indicates that whoever thinks that what he is
narrating is most likely to be false yet still narrates it is a liar. End
quote.

Telling lies about the Messenger of Allah (blessings and
peace of Allah be upon him) is not like telling lies about anyone else. The
Messenger of Allah (blessings and peace of Allah be upon him) said:
“Whoever tells a lie about me
deliberately, let him take his place in Hell.”

Narrated by al-Bukhaari (110) and Muslim (3). 

And Allah knows best. 

See also the answer to question no. 9464.