Encyclopedia of Prophetic Hadiths

"When you hear the Adhan (call to prayer), repeat what the Muezzin says."

"Whoever glorifies Allah directly after each prayer thirty-three times, praises Allah thirty-three times, and proclaims the greatness of Allah thirty-three times, these are ninety-nine, and completes one hundred by saying: La ilāha illallāh wahdahu la sharīka lah, lahu al-mulku wa lahu al-hamdu wa huwa ‘ala kulli shay’in qadīr (There is no god except Allah. He is One and has no partner with Him. To Him belongs sovereignty and to Him belongs praise, and He is Omnipotent over everything), his sins will be forgiven even if they are like the sea foam."

The Messenger of Allah (may Allah's peace and blessings be upon him) recited: {Say, “O disbelievers”} and {Say: “He is Allah, the One”} in the two Rak‘ahs of Fajr.

I memorized from the Prophet (may Allah's peace and blessings be upon him) ten Rak‘ahs (units of prayer): two Rak‘ahs before Zhuhr and two Rak‘ahs after it, two Rak‘ahs after Maghrib at his home, two Rak‘ahs after ‘Ishā’ at his home, and two Rak‘ahs before the Fajr prayer, an hour when none was allowed to enter upon the Prophet (may Allah's peace and blessings be upon him). Hafsah told me that after the muezzin would make Adhān (call to prayer) and after the break of dawn, the Prophet (may Allah's peace and blessings be upon him) used to offer two Rak‘ahs. Another wording reads: The Prophet (may Allah's peace and blessings be upon him) used to offer two Rak‘ahs after the Friday prayer.

"When any of you enters the mosque, let him say: 'Allahumma iftah li abwāba rahmatik' (O Allah, open for me the gates of Your mercy). And when he leaves, let him say: 'Allahumma inni as’aluka min fadlik' (O Allah, I ask You of Your bounty)."

"Whoever forgets a prayer should perform it as soon as he remembers it; there is no expiation for it except that: {and establish prayer to remember me.} [Surat Tā-ha: 14]"

"Whoever takes a bath on Friday, like the bath taken from sexual impurity, and then goes (to the mosque) is like the one who offers a camel as a sacrifice; whoever goes at the second hour is like the one who offers a cow as a sacrifice; whoever goes at the third hour is like the one who offers a horned ram as a sacrifice; whoever goes at the fourth hour is like the one who offers a chicken as a sacrifice; and whoever goes at the fifth hour is like one who offers an egg as a sacrifice. When the Imām comes out, the angels come to listen to the Dhikr."

'Uthmān ibn' Affān (may Allah be pleased with him) wanted to build the mosque, but the people did not like this idea, and they wished that he should keep it as it was. Thereupon, he said: "I heard the Messenger of Allah (may Allah's peace and blessings be upon him) say: 'He who builds a mosque for Allah, Allah will build for him the like of it in Paradise.'"