It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The supplication of every one of you is accepted as long as he does not become hasty, that is, he does not say: 'I have supplicated but it has not been accepted.'"

And with this chain (it is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him) that the Messenger of Allah, peace and blessings be upon him, said: "None of you should say (at the time of supplication): O Allah! If You will, forgive me; O Allah! If You will, have mercy on me. One should ask (Allah) with determination, for there is no one who can compel Him."

And with this same chain (it is narrated from Sayyiduna Jabir bin Abdullah al-Ansari, may Allah be pleased with him) that when the Messenger of Allah, peace and blessings be upon him, would stand on Safa, he would say takbir (Allahu Akbar) three times and say: «لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ. لَا شَرِيكَ لَهُ. لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ.» ‏‏‏‏ "There is no god (worthy of worship) except Allah, He is alone, He has no partner, His is the dominion and His is the praise, and He has power over all things." The Prophet, peace and blessings be upon him, would do this three times and make supplication, and he would do the same on (the hill of) Marwah.

And with the same chain of narration (it is narrated from Sayyiduna Ibn Umar, may Allah be pleased with them both) that the Messenger of Allah, peace and blessings be upon him, said: "Fever is from the breath of Hell, so cool it with water." And Ibn Umar, may Allah be pleased with them both, used to say: "O Allah! Remove the punishment from us."

And with this same chain (it is narrated from Sayyiduna Ibn Umar, may Allah be pleased with them both) that when the Messenger of Allah, peace and blessings be upon him, would return from jihad, Hajj, or Umrah, he would say takbir three times upon ascending every high ground, then he would say: «لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ، وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ، آيِبُونَ تَائِبُونَ عَابِدُونَ سَاجِدُونَ. لِرَبِّنَا حَامِدُونَ. صَدَقَ اللَّهُ وَعْدَهُ. وَنَصَرَ عَبْدَهُ. وَهَزَمَ الْأَحْزَابَ وَحْدَهُ» "There is no god (worthy of worship) except Allah, He is alone, He has no partner, His is the dominion and His is the praise, and He has power over all things. We are returning, repenting, worshipping, prostrating, praising our Lord. Allah has fulfilled His promise, helped His servant, and He alone defeated all the groups."

And with the same chain (it is narrated from Sayyida Aisha, may Allah be pleased with her) that when the Messenger of Allah, peace and blessings be upon him, would become ill, he would recite the Mu'awwidhat (Surah Al-Ikhlas, Surah Al-Falaq, and Surah An-Nas) over himself and blow (over himself). When his illness became more severe, I would recite over him and, seeking blessing, would pass his hand over his (blessed) body.

And with this same chain (it is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him) that the Messenger of Allah, peace and blessings be upon him, said: "Whoever says «لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ» one hundred times during the day, he will have the reward of freeing ten slaves, Allah will write for him one hundred good deeds and erase one hundred of his sins (by forgiving them). These (words) will become a means of protection for him from Satan until the evening of that day, and no one will have done a better deed than him except the one who does more than this. And whoever recites «سُبْحَانَ اللَّهِ وَبِحَمْدِهِ» one hundred times during the day, his sins will be wiped away (forgiven) even if they are as much as the foam of the sea."

And with this same chain (it is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him) that the Messenger of Allah, peace and blessings be upon him, said: "Whoever says «لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ» one hundred times during the day, he will have the reward of freeing ten slaves, Allah will write for him one hundred good deeds and erase one hundred of his sins (by forgiving them). These (words) will become a means of protection for him from Satan until the evening of that day, and no one will have done a better deed than this except the one who does more than this. And whoever recites «سُبْحَانَ اللَّهِ وَبِحَمْدِهِ» one hundred times during the day, his sins will be wiped away (forgiven) even if they are as much as the foam of the sea."

It is narrated from a man of the Aslam tribe that one night I could not sleep, so the Messenger of Allah, peace be upon him, said: "For what reason?" He said: I was bitten by a bed creature. So the Messenger of Allah, peace be upon him, said: "If you had recited in the evening «أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ شَرِّ مَا خَلَقَ» 'I seek refuge in the perfect words of Allah from the evil of what He has created,' then, insha'Allah, nothing would have harmed you."

It is narrated from Sayyiduna Uthman bin Abi al-As al-Thaqafi (may Allah be pleased with him) that he went to the Messenger of Allah (peace and blessings be upon him) and said: "I have a pain that is about to destroy me." He says that the Messenger of Allah (peace and blessings be upon him) said to me: "Place your right hand (on the place of pain) and say seven times: «أَعُوذُ بِعِزَّةِ اللَّهِ وَقُدْرَتِهِ، مِنْ شَرِّ مَا أَجِدُ» I seek refuge in Allah’s honor and power from the evil of what I find." He said that I did so, and Allah removed my pain. I continuously instruct my family and other people to do the same.