Yahya related to me from Malik from Ibn Shihab from Urwa ibn az-
Zubayr that A'isha, the wife of the Prophet, may Allah bless him and
grant him peace, said, "I never once saw the Messenger of Allah, may
Allah bless him and grant him peace, doing the voluntary prayer of
duha, but I myself do it. Sometimes the Messenger of Allah, may Allah
bless him and grant him peace, would refrain from a practice that he
loved to do, fearing that people would do the same and it would become
fard for them ."
Muwatta Malik Book 9, Hadith 34
When Allah's Messenger (ﷺ) reached Medina, Abu Bakr and Bilal became ill. When Abu Bakr's fever got
worse, he would recite (this poetic verse): "Everybody is staying alive with his People, yet Death is
nearer to him than His shoe laces." And Bilal, when his fever deserted him, would recite: "Would that
I could stay overnight in A valley wherein I would be Surrounded by Idhkhir and Jalil (kinds of goodsmelling
grass). Would that one day I could Drink the water of the Majanna, and Would that (The two
mountains) Shama and Tafil would appear to me!" The Prophet (ﷺ) said, "O Allah! Curse Shaiba bin
Rabi`a and `Utba bin Rabi`a and Umaiya bin Khalaf as they turned us out of our land to the land of
epidemics." Allah's Messenger (ﷺ) then said, "O Allah! Make us love Medina as we love Mecca or even
more than that. O Allah! Give blessings in our Sa and our Mudd (measures symbolizing food) and
make the climate of Medina suitable for us, and divert its fever towards Aljuhfa." Aisha added: When
we reached Medina, it was the most unhealthy of Allah's lands, and the valley of Bathan (the valley of
Medina) used to flow with impure colored water.
Sahih al-Bukhari Book 29, Hadith 23
“I said, I must
observe how the Messenger of Allah (ﷺ) prays tonight. So I lay down
at his door. The Messenger of Allah (ﷺ) got up and prayed two brief
Rak’ah, then two long ones, which were very, very long, then two
Rak’ah which were shorter than the ones preceding them, then two
Rak’ah which were shorter than the ones preceding them, then two
Rak’ah which were shorter than the ones preceding them, then two
Rak’ah, then Witr. That was thirteen Rak’ah.”
Sunan Ibn Majah Book 5, Hadith 560
When the Messenger of Allah (ﷺ) stood up for praying at midnight, he said: o Allah, be praise to Thee, Thou art the light of the heavens and the earth; and to Thee be praise; Thou are the maintainer of the heavens and the earth; and to Thee be praise, Thou art the heavens and the earth and what is between them; Thou art the truth, and Thy statement is truth; and Thy promise is the truth; and the visitation with Thee is true; and the Paradise is true and the Hell-fire is true and the Hour is true; O Allah, to Thee I turned my attention, and by Thee I disputed, and to Thee I brought forth my case, so forgive me my former and latter sins, and my secret and open sins, Thou art my deity, there is no deity but Thou.
Sunan Abi Dawud Book 2, Hadith 381
Aban ibn Uthman said: I heard Uthman ibn Affan (his father) say: I heard the Messenger of Allah (ﷺ) say: If anyone says three times: "In the name of Allah, when Whose name is mentioned nothing on Earth or in Heaven can cause harm, and He is the Hearer, the Knower" he will not suffer sudden affliction till the morning, and if anyone says this in the morning, he will not suffer sudden affliction till the evening.
Aban was afflicted by some paralysis and when a man who heard the tradition began to look at him, he said to him: Why are you looking at me? I swear by Allah, I did not tell a lie about Uthman, nor did Uthman tell a lie about the Prophet (ﷺ), but that day when I was afflicted by it, I became angry and forgot to say them.
Sunan Abi Dawud Book 43, Hadith 316
"Sa'd used to teach his children these words as a teacher teaches his students, and he said that the Messenger of Allah used to seek refuge by means of them at the end of every prayer: 'Allahumma inni a'udhu bika minal-bukhli, wa a'udhu bika minal-jubni, wa a'udhu bika an uradda ila ardhalil-'umuri, wa a'udhu bika min fitnatid-dunya, wa a'udhu bika min 'adhabil-qabr (O Allah, I seek refuge with You from miserliness, and I seek refuge in You from cowardice, and I seek refuge in You from reaching the age of senility, and I seek refuge in You from the trials of this world, and I seek refuge in You from the torment of the grave.) So I narrated that to Mus'ab and he said that he told the truth."
Sunan an-Nasa'i Book 50, Hadith 20