Anas reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "When one of you makes a supplication, he should be firm in the supplication and not say, 'O Allah, if you like, give to me.' Allah cannot be forced against His will."

Allah's Messenger (SAW) said, "I have been forbidden to recite the Qur'an while bowing or prostrating; so while in the bowing (position) glorify (the Perfection of) the Rabb (Lord), and while in the prostrating (position) be earnest in supplication, for it is fitting that your supplications may be answered." [Reported by Muslim].

“I said to Umm Salamah: ‘O Mother of the Believers! What was the supplication that the Messenger of Allah (saws) said most frequently when he was with you?” She said: ‘The supplication he said most frequently was: “O Changer of the hearts, make my heart firm upon Your religion (Yā Muqallibal-qulūb, thabbit qalbī `alā dīnik).’” She said: ‘So I said: “O Messenger of Allah, why do you supplicate so frequently: ‘O Changer of the hearts, make my heart firm upon Your religion.’ He said: ‘O Umm Salamah! Verily, there is no human being except that his heart is between Two Fingers of the Fingers of Allah, so whomsoever He wills He makes steadfast, and whomever He wills He causes to deviate.’”

'O Allah, protect me from the evil of my sight and hearing, my tongue, my heart, and the evil of my desire.'"

“O Allah, destroy their large ones and kill their small ones, spoil their eggs and root them out. Take their mouths away from our livelihood and provision, for You are the One Who hears the prayers.” A man said: “O Messenger of Allah, are you praying against one of the troops of Allah, that they may be rooted out?” He said: “Locusts were sneezed out by the fish in the sea.”

“Pray to Allah to heal me.” He said: “If you wish to store your reward for the Hereafter, that is better, or if you wish, I will supplicate for you.” He said: “Supplicate.” So he told him to perform ablution and do it well, and to pray two Rak’ah, and to say this supplication: “Allahumma inni as’aluka wa atawajjahu ilaika bimuhammadin nabiyyir-rahmah. Ya Muhammadu inni qad tawajjahtu bika ila rabbi fi hajati hadhihi lituqda. Allahumma fashaffi’hu fiya (O Allah, I ask of You and I turn my face towards You by virtue of the intercession of Muhammad the Prophet of mercy. O Muhammad, I have turned to my Lord by virtue of your intercession concerning this need of mine so that it may be met. O Allah, accept his intercession concerning me)”.

He said to Allah's Messenger (SAW), "Teach me a supplication to use in my prayer." He (SAW) said, "Say: O Allah, I have greatly wronged myself, and no one forgives sins except You, so grant me forgiveness from You and have mercy on me, You are the Forgiving and the Merciful One." [Agreed upon].

The Prophet (SAW) was delivering the Khutbah (religious talk, sermon) while standing on a Friday when a man came into the mosque and said, "O Messenger of Allah! The livestock have died and the roads are cut off, so supplicate Allah to send us down rain." Allah's Messenger (SAW) raised his hands and then said, "O Allah! send us down rain, O Allah! send us down rain, O Allah! send us down rain." And the reporter mentioned the complete Hadith, which contains supplication to stop the rain. [Agreed upon].

"Ibn Abbas performed Salat for a funeral and he recited Fatihatil-Kitab. So I asked him about it and he said: 'It is from the Sunnah' or, 'From the completeness of the Sunnah.'"

From Jabir bin 'Abdullah and Anas bin Malik who said: "When the Messenger of Allah (saws) supplicated against locusts he would say: 'O Allah! Destroy the locusts, kill the large among him, and destroy the small, spoil his core, and cut off his rear. Take their mouths from our livelihood and our sustenance. Verily, You indeed listen to the supplication!' So a man said: 'O Messenger of Allah! How is it that you supplicate against one of the Allah's armies that He cut off their rear?'" He said: "So the Messenger of Allah (saws) said: 'They are bit scattered from a fish in the ocean.'"

[Abu 'Eisa said:] This Hadith is Gharib. We do not know of it except from this route. And Musa bin Muhammad bin Ibrahim At-Taimi has been criticized. He narrates many Gharib and Munkar narrations. His father Muhammad bin Ibrahim is trustworthy, and he is from Al-Madinah.

‘Abbas b. Mirdas said that God’s messenger prayed for pardon for his people on the late evening of ‘Arafa and received the reply, “I have forgiven them all but acts of oppression, for I shall exact recompense for him who is wronged from his oppressor.” He said, “O my Lord, if Thou wilt Thou mayest give the oppressed some of paradise and forgive the oppressor,” but he did not receive a reply that evening. So he repeated the supplication at al-Muzdalifa in the morning and was given an answer to what he asked, whereupon he laughed (or he said that he smiled). Abu Bakr and ‘Umar then said to him, “You for whom we would give our fathers and mothers as ransom, what has made you laugh, for this is not a time at which you have been accustomed to laugh ? May God give you cause for laughter all your life !” He replied, “When God’s enemy, Iblls, knew that God who is great and glorious had answered my supplication and forgiven my people, he took some earth and began to throw it on his head crying out ‘Woe and destruction.’ The sight of his distress made me laugh.” Ibn Majah transmitted it, and Baihaqi transmitted something similar in Kitab al-ba‘th wan-nushur.

'Abdullah ibn 'Umar said, "One of the supplications of the Messenger of Allah was, 'O Allah, I seek refuge with You from the disappearance of Your blessing and from the loss of good health and Your sudden vengeance and all of Your anger.'"