'Abdullah bin Zaid narrated: "When the Prophet ordered that a bell be rung so that people congregate for the prayer, I saw in my dream a person coming to me with a bell in his hand. So I said: 'O servant of Allah! Will you sell (me) the bell?' He said: 'What will you do with it?' I said, 'We will call people with it to the prayer.' So he said: 'Should I not inform you of something which will be better than this?' I said: 'Yes, of course!' So he said: 'Say:

Then (the person) moved a small distance away and said: 'Then you should say, when you wish to start the prayer:

"Allãhu Akbaru Allãhu akbaru, Ashhadu anla ilãha illallah, Ashhadu anna Muhammadan Rasülullah. Hayya 'ala-sa1ãt, Hayya 'alal-falah. Qad qamatis-salah, Qad qamatis-salah. Allahu Akbaru Allãhu Akbaru, la ilaha illallah."

(Allah is the Most Great, Allah is the Most Great, I bear witness that none has the right to be worshiped but Allah, I bear witness that Muhammad is the Messenger of Allah; Come to the prayer; Come to the prosperity; The prayer is about to begin; Allah is the Most Great, Allah is the Most Great; none has the right to be worshiped but Allah).

The next morning, I came to the Messenger of Allah (ﷺ) and informed him of my dream. He said: 'This is a true dream (from Allah), Allah willing. Stand up with Bilãl and tell him (the words) that saw in your dream, for he has a louder voice than you.' So I stood with Bilal and started reciting to him (the words), and he would call them out (loudly). 'Umar bin Al- Khattab heard this while he was in his house, so he left (his house) dragging his Rida' behind him, saying: '(I swear) by Him Who has sent you with the truth, 0 Messenger of Allah, I (too) dreamt the same dream that he has been shown.' So the Messenger of Allah (ﷺ) said: 'Then all praises are due to Allah."

TRANSLATION:
1) Allah is the Most Great;
2) I bear witness that none has the right to be worshiped but Allah;
3) I bear witness that Muhammad is the Messenger of Allah;
4) Come to the prayer;
5) Come to the prosperity;
6) Allah is the Most Great,
7) Allah is the Most Great;
8) None has the right to be worshiped but Allah.

It was narrated that 'Alqamah bin Waqqas said:
"I was with Mu'awiyah when the Mu'adhdhin called the Adhan. Muawiyah said what the Mu'adhdhin said, but when he said: 'Hayya 'alas-salah (come to prayer),' he said: 'La hawla wa la quwwata illa Billah (There is no power and no strength except with Allah);' and when he said: 'Hayya 'alal-falah (come to prosperity),' he said: 'La hawla wa la quwwata illa Billah (There is no power and no strength except with Allah).' After that he said what the Mu'adhdhin said, then he said: 'I heard the Messenger of Allah (ﷺ) saying exactly like that.'"

TRANSLATION:
There is no power and no strength except with Allah.

PROPHET MUHAMMAD (ﷺ) said:
If the Mu'adhdhin says:
"Allâhu akbaru Allâhu akbar (Allah is most great, Allah is most great)," and one of you says: "Allâhu akbaru Allâhu akbar (Allah is most great, Allah is most great);"
then he says: "Ashadu Al Laa ilâha illallâh (I bear witness that none has the right to be worshipped but Allah)," and you say: " Ashadu Al Laa ilâha illallâh (I bear witness that none has the right to be worshipped but Allah);"
then he says: "Ashadu anna Muhammadan Rasool-Allâh (I bear witness that Muhammad
is the Messenger of Allah)," and you say: " Ashadu anna Muhammadan Rasool-Allâh (I bear witness that Muhammad is the Messenger of Allah);"
then he says: "Hayya Alas Salaah (Come to prayer)," and you say: "La Hawla wa lâ quwwata illa Billâh (There is no power and no might except with Allah);"
then he says: "Hayya Alal Falaah (Come to prosperity)," and you say: La Hawla wa lâ quwwata illa Billâh (There is no power and no might except with Allah);"
then he says: "Allâhu akbaru Allâhu akbar (Allah is most great, Allah is most great)," and you say: "Allâhu akbaru Allâhu akbar (Allah is most great, Allah is most great);"
then he says: "La ilâha illallâh (None has the right to be worshipped but Allah)," and one of you says: "La ilâha illallâh (None has the right to be worshipped but Allah),"
from the heart, he will enter Paradise."

PROPHET MUHAMMAD (ﷺ) said:
Whoever says when he hears the Azaân:

his sins will be forgiven.

TRANSLATION:
I bear witness that none has the right to be worshipped but Allah, with no partner or associate, and I bear witness that Muhammad (ﷺ) is His slave and Messenger; I am content with Allah as my Lord, Muhammad (ﷺ) as Messenger and Islam as my religion.

PROPHET MUHAMMAD (ﷺ) said:
When you hear the Muadhdhin, say what he says, then send Salat upon me, for whoever sends Salat upon me, Allah will send Salat upon him tenfold. Then ask Allah to grant me Al-Wasilah, for it is a station in Paradise which only one of the slaves of Allah will attain, and I hope that I will be the one. Whoever asks for Al-Wasilah for me, (my) intercession will be permissible for him.

Narrated `Abdur-Rahman bin Abi Laila:
Ka`b bin Ujrah met me and said, "Shall I not give you a present I got from the Prophet?" `Abdur- Rahman said, "Yes, give it to me." I said, "We asked Allah's Messenger (ﷺ) saying, 'O Allah's Messenger (ﷺ)! How should one (ask Allah to) send blessings on you, the members of the family, for Allah has taught us how to salute you (in the prayer)?' He said, 'Say:

TRANSLATION:
O Allah! Send Your Mercy on Muhammad and on the family of Muhammad, as You sent Your Mercy on Abraham and on the family of Abraham, for You are the Most Praise-worthy, the Most Glorious.
O Allah! Send Your Blessings on Muhammad and the family of Muhammad, as You sent your Blessings on Abraham and on the family of Abraham, for You are the Most Praise-worthy, the Most Glorious.

Whoever after listening to the Azaan says,

then intercession for me will be permitted for him on the Day of Resurrection

TRANSLATION:
O Allah! Lord of this perfect call and of the regular prayer which is going to be established, give Muhammad the right of intercession and illustriousness, and resurrect him to the best and the highest place in Paradise that You promised him (of).