Ubayy (RA) reported: "In the first rakʿah of witr (prayer), the Messenger of Allah (ﷺ) ﷺ used to recite: “Sabbiḥ isma rabbikal-aʿlā (Sūrat al-Aʿlā), in the second, Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), and in the third (rakʿah), Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ).” Reference: Sunan an-Nasa'i 1700

Samurah bin Jundub reported: The Messenger of Allah (ﷺ) used to recite in the Friday prayer: Sabbiḥ isma rabbikal-aʿlā (Sūrat al-Aʿlā), and Hal attaka hadeethul ghāshiyah (Sūrat al-Ghāshiyah). Reference: Sunan Abi Dawud 1125, Sunan Ibn Majah 1120.

It was narrated that An-Nu'mān bin Bashir said: "The Messenger of Allah (ﷺ) used to recite 'Glorify the name of your Lord, the Most High' (Al-A’lā) and 'Has there come to you the narration of the overwhelming (i.e. the Day of Resurrection)?' (Al-Ghāshiyah) in the Jumu'ah prayer, and sometimes 'Eid and Jumu'ah would fall on the same day, and he would recite them in both 'Eid and Jumu'ah prayer." Reference: Sunan an-Nasa'i 1424

Samurah bin Jundub reported: The Messenger of Allah (ﷺ) used to recite in the Friday prayer: Sabbiḥ isma rabbikal-aʿlā (Sūrat al-Aʿlā), and Hal attaka hadeethul ghāshiyah (Sūrat al-Ghāshiyah). Reference: Sunan Abi Dawud 1125, Sunan Ibn Majah 1120.

It was narrated that An-Nu'mān bin Bashir said: "The Messenger of Allah (ﷺ) used to recite 'Glorify the name of your Lord, the Most High' (Al-A’lā) and 'Has there come to you the narration of the overwhelming (i.e. the Day of Resurrection)?' (Al-Ghāshiyah) in the Jumu'ah prayer, and sometimes 'Eid and Jumu'ah would fall on the same day, and he would recite them in both 'Eid and Jumu'ah prayer." Reference: Sunan an-Nasa'i 1424.

The Messenger of Allah (ﷺ) ﷺ would pray two rakʿahs after witr while sitting, reciting in the two rakʿahs “Idhā zulzilat al-ardhu…” (Sūrah al-Zalzalah) and “Qul Ya Ayyuhal-Kafirun” (Sūrat al-Kāfirūn). Reference: Zad al-Ma`ad 1/322 Is Sūrat al-Zalzalah equivalent to one-fourth of the Qur’an? The reports about Sūrat Al-Zalzalah being equivalent to one-fourth of the Qur’an have some weakness in them, although they are strengthened by the different variations as well as the multiple mursal reports (which are weak standalone). Ibn Khuzaymah categorized one particular attributed to Anas (RA) as saḥiḥ and al-Tirmidhī classified one narration as ḥasan, while others relied on the report of Ibn Abbās.

Abu Madīnah al-Dārimī said: “When two Companions of the Prophet (ﷺ) ﷺ would meet, they would not part until they had read Sūrah al-‘Aṣr (103), and then they would give salām (and leave).” Reference: Abū Dāwūd in Al-Zuhd, no. 417; Al-Ṭabarānī ’s al-Mu'jam al-Awsat, 5/215; Sunan al-Bayhaqī, 6/501.

Farwah bin Nawfal narrated from his father that he went to the Prophet (ﷺ) and said: “O Messenger of Allah, teach me something that I may say when I go to my bed.” So he said: “Recite Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), for verily it is a disavowal from shirk. Reference: Jami` at-Tirmidhi 3403. In one report, the Prophet (ﷺ) ﷺ said: Recite Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn) and then sleep upon completion , for it is a disavowal from shirk. Reference: Sunan Abi Dawud 5055.

Ibn ʿAbbās reported that the Prophet (ﷺ) ﷺ said: “Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ) is equivalent to one-third of the Qur'ān, and Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn) is equivalent to one-fourth of the Qur'ān.” Reference: Al-Silsilah al-Ṣaḥīḥah 586.

Abu Hurayrah reported that the Messenger of Allah (ﷺ) ﷺ recited in the two (optional) rakʿahs of fajr: Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), and Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ). Reference: Sahih Muslim 726.

Abdullah bin Masʿūd narrated: "I cannot count how many times I heard Allah's Messenger (ﷺ) reciting in the two rakʿahs after Maghrib and the two rakʿahs before Salat al-Fajr: Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), and Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ).” Reference: Jami` at-Tirmidhi 431.

Abu Hurayrah also reported that the Messenger of Allah (ﷺ) ﷺ recited in the two rakʿahs before fajr prayer: Qul yā ayyuhal kāfiroon and Qul huwa Allāhu aḥad. Reference: Sunan an-Nasa'i 945.

Jābir reported: “During the two rakʿahs of ṭawāf, the Messenger of Allah (ﷺ) ﷺ recited the two suwar: Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), and Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ).” Reference: Jami` at-Tirmidhi 869.

Ubayy reported: "In the first rakʿah of witr (prayer), the Messenger of Allah (ﷺ) ﷺ used to recite: “Sabbiḥ isma rabbikal-aʿlā (Sūrat al-Aʿlā), in the second, Qul yā ayyuhal kāfirūn (Sūrat al-Kāfirūn), and in the third (rakʿah), Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ).” Reference: Sunan an-Nasa'i 1699.

The Prophet (ﷺ) ﷺ asked: “Is any one of you unable to recite one-third of the Qur'ān in one night? They said: How could anyone read one-third of the Qur'ān (in one night)? He said: Qul huwa Allāhu aḥad (Sūrat al-Ikhlāṣ) is equivalent to one-third of the Qur'ān.” Reference: Sahih Muslim 811a.

Narrated Abu Sa’id Al-Khudrī, “A man heard another man reciting (Sūrah Al-Ikhlāṣ) ‘Say He is Allah, (the) One.’ repeatedly. The next morning, he came to Allah’s Messenger ﷺ and informed him about it as if he thought that it was not enough to recite. On that Allah’s Messenger ﷺ said, “By Him in Whose Hand my life is, this Sūrah is equal to one-third of the Qur’an!” Reference: Sahih al-Bukhari 5013.

This hadith has been narrated by Qatada with the same chain of transmitters in these words: He (the Messenger of Allah) said: Allah divided the Qur'an into three parts, and he made:" Say: He, Allah is One." one part out of the (three) parts of the Qur'an.” Reference: Sahih Muslim 811b.

It is reported on the authority of Abu Hurayrah that the Messenger of Allah (ﷺ) said: Gather, for I am going to recite one-third of the Qur'an before you. And those who could get together gathered there. Then the Messenger of Allah (ﷺ) came out and recited:" Say: He, Allah, is One." He then entered (his house). Some of us said to the others: Perhaps there has been some news from the heaven on account of which he has gone Inside (the house). The Messenger of Allah (ﷺ) again came out and said: I told you that I was going to recite one-third of the Qur'in; keep in mind, this (Sūrah Ikhlāṣ) is equivalent to one-third of the Qur'an. Reference: Sahih Muslim 812a.

Anas mentioned that a man said to the Prophet (ﷺ) ﷺ, ‘I really love this sūrah’. The Prophet (ﷺ) replied, ‘And your love for it will enable you to enter paradise’. Reference: Jami` at-Tirmidhi 2901.

Abu Hurayrah reported: "I went out with the Messenger of Allah (ﷺ) and heard a man reciting Qul Huwa Allahu Ahad [Sūrah Al-Ikhlāṣ] so the Messenger of Allah (ﷺ) said: 'It is obligatory.' I said: 'What is obligatory?' He said: 'Paradise (is obligatory as a reward for the man).'" Reference: Jami` at-Tirmidhi 2897.