Al-Ikhlas (ِArabic: الْإِخْلَاص, "Sincerity"), also known as al-Tawhid (Arabic: التوحيد‎, "Monotheism") is the 112th chapter (surah) of the Quran. This surah is positioned in Para 30 which is also known as Juz Amma (Juz' 30). In the early years of Islam, some surahs of the Quran came to be known by several different names, sometimes varying by region. This surat was among those to receive many different titles. It is a short declaration of tawhid, Allah's absolute oneness, consisting of four ayat. Al-Ikhlas means "the purity" or "the refining".

It is disputed whether this is a Meccan or Medinan sura. The former seems more probable, particularly since it seems to have been alluded to by Bilal of Abyssinia, who, when he was being tortured by his cruel master, is said to have repeated "Ahad, Ahad!" (unique, referring as here to God). It is reported from Ubayy ibn Ka'b that it was revealed after the polytheists asked "O Muhammad! Tell us the lineage of your Lord."

Hadith / Hadees:
According to hadiths, this surah is an especially important and honored part of the Quran:

Narrated Abu Said Al-Khudri: A man heard another man reciting (in the prayers): 'Say (O Muhammad): "He is Allah, the One." And he recited it repeatedly. When it was morning, he went to the Prophet and informed him about that as if he considered that the recitation of that Sura by itself was not enough. Allah's Apostle said, "By Him in Whose Hand my life is, it is equal to one-third of the Quran."
Narrated Yahya related to me from Malik from Ibn Shihab that Humayd ibn Abd ar-Rahman ibn Awf had told him that Surat al-Ikhlas was equal to a third of the Qur'an (Mushaf / Koran), and that Surat al-Mulk pleaded for its owner.
Narrated 'Aisha: The Prophet sent (an army unit) under the command of a man who used to lead his companions in the prayers and would finish his recitation with (the Sura 112): 'Say (O Muhammad): "He is Allah, the One." ' When they returned (from the battle), they mentioned that to the Prophet. He said (to them), "Ask him why he does so." They asked him and he said, "I do so because it mentions the qualities of the Beneficent and I love to recite it (in my prayer)." The Prophet; said (to them), "Tell him that Allah loves him"
Imam Malik bin Anas recorded from Ubayd bin Hunayn that he heard Abu Hurayrah saying, "I went out with the Prophet and he heard a man reciting `Say: He is Allah, the One.' So the Messenger of Allah said, (It is obligatory). I asked, `What is obligatory' He replied, "Paradise."
An authentic Hadith says 'Say [recite] Surat al-Ikhlās and al-Muawwidhatayn (Surat al-Falaq and Surat an-Nas) three times in the morning and the evening; they will suffice you from everything.' [Narrated by At-Tirmidhi. And Muhammad Nasiruddin al-Albani authenticated it:
Narrated Aisha: "Whenever the Prophet went to bed every night, he used to cup his hands together and blow over it after reciting Surah al-Ikhlas, Surah al-Falaq and Surah an-Nas, and then rub his hands over whatever parts of his body he was able to rub, starting with his head, face and front of his body. He used to do that three times.
Imam Ahmad also recorded that Ibn 'Umar said, "I watched the Prophet twenty-four or twenty-five times reciting in the two Rak'ahs before the Morning prayer (salah / salat / namaz / solat) and the two Rak'ahs after the Sunset prayer, 'Say: "O ye infidels!"' (Surah Al Kafirun) and "Say: "He is Allah, One."

Recitation of Surah al-ikhlas is equivalent to a third of the quran. In the hadith, abu hurairah (mabpwh) narrated that the prophet (pbuh) said: “gather around for i will recite to you a third of the quran.”

Surat AlIkhlas (Memurnikan Ke-Esa-an Allah SWT) adalah Surat ke-112 dalam Al-Qur an dengan fadhilah dan keutamaan yang menakjubkan. Surat ini tergolong Surat Makkiyah, terdiri atas 4 ayat dan pokok isinya adalah menegaskan ke-Esa-an AllAh dan menolak segala bentuk penyekutuan terhadap-Nya