Allah's Messenger said: "Whenyou hear the call (to prayer) then say the similar to what the Mu'adh-dhin says"

"Indeed, amount the last (of orders) Allah's Messenger ordered me with was to employ a Mu'adh-dhin who would not take a wage for his Adhan."

Allah's Messenger said: "Whoever says, when he hears the Mu'adh-dhin: (Wa Ana Ashadu An La Ilaha Illallah, Wahdahu La Sharika Lahu, Wa Anna Muhammadan Abduhu Wa Rasuluhu, Radittu Billahi Rabban Wa Bil-Islam Dinan, Wa Bi Muhammadin Rasulan) 'I too testify that none has the right to be worshiped but Allah, Alone without partners, and that Muhammad is His slave and Messenger, I am pleased with Allah as my Lord, with Islam as my religion and Muhammad as a Messenger.' - Allah will pardon his sins for him."

Allah's Messenger said: "Whoever says, when he hears the call: (Allahumma, rabba hadhihidda 'watit-tammati was Salatilqa'imah, ati Muhammadanil wasilata wal-Fadilata, wab'athhu Maqamun Mahmudan alladhi wa'adtahu) 'O Allah! Lord of this perfect call and established prayer, grant Muhammad Al-Wasilah and Al-Fadilah, and raise him to the praised station that you promised him' - then intercession on the Day of Resurrection is made lawful for him."

Allah's Messenger said: "The supplication made between the Adhan and Iqamah is not rejected."

"On the Night of Isra, fifty prayers were made obligatory upon the Prophet. Then it was decreased until it was made five. Then it was called out: 'O Muhammad! Indeed My Word does not change; these five prayers will be recorded for you as fifty.'"

Allah's Messenger said: "The five prayers, and Al-Jumuah (the Friday prayer) to Al-Jumuah are atonement for what is between them, as long as the major sins have not been committed."

Allah's Messenger said: "Salat in congregation is twenty-seven degrees more virtuous than a man's Salat alone."

Allah's Messenger said: "Indeed a man's Salat in the congregation is increased by twenty five rewards over his Salat alone."

the Prophet said: "I was about to order my boys to collect bundles of firewood, then order Salat to be held, then burn (the homes) of the people who did not attend the Salat."

"Ibn Abbas was asked about a man who fasted during the day and stood (in prayers) during the night, but he did not attend the Friday prayer nor congregational prayer. He replied: 'He is in the Fire.'"

"I attended Hajj with the Prophet. I prayed the Subh (Fajr) prayer with him in Masjid AI-Khaif." He said: "When the Prophet finished, he turned (from the Qiblah) and saw two men at the back of the people who had not prayed with him. He said, 'Bring them to me.' So I brought then while they were shuddering with fear. He said: 'What prevented you from praying with us?" They said: 'O Messenger of Allah!' We prayed at our camp.' So he said: 'Do not do that; when you pray in your camp then you come to a Masjid with a congregation, then pray with them. That will be a voluntary prayer for you.'"

"A man came when Allah's Messenger had already prayed, so he said: 'Which of you will give some reward to this person?' So a man stood to pray with him."

Allah's Messenger said: "Whoever attends Isha (prayer) in congregation, then he has (the reward as if he had) stood half of the night. And whoever prays Isha and Fajr in congregation, then he has (the reward as if he had) spend the entire night standing (in prayer)."

the Prophet said: "Whoever prays the Subh then he is under the protection of Allah's covenant, so do not be treacherous with Allah in his covenant."

the Prophet said: "Give glad tiding to those who walk to the Masajid in the dark; of a complete light on the Day of Resurrection."

Allah's Messenger said: "The best rows for the men are the first of them, and the worst are the last of them. And the best rows for the women are the last of them, and the worst are the first of them."

And the Prophet said: "If the people knew what (reward) is in the call (Adhan) and the first row, and they found no other way to get that except drawing lots, then they would draw lots."

A Similar narration

"Allah's Messenger would straighten our lines. One day he came out and saw a man whose chest was protruding from the people, so he said: 'You must straighten your lines, or Allah will cause disagreement to occur among your faces."