Virtue of Surah Al'Ikhlaas in Quran:

Surah Ikhlaas was reveal when idol worshipers of Arabia ask About the God/Allah of prophet Muhammad PBUH.. they said tell us about your lord then Prophet Muhammad PBUH recite this surah which is definition of Allah/God. This surah is somewhat special in Quran and Prophet Muhammad PBUH said that the dignity of Surah Ikhlaas is equal to 1/3 of the whole quran. The hadith of Sahih bukhari in which once prophet Muhammad PBUH Said to his companions that:

"can it be possible for you to read 1/3 of the Holly quran every night? The companions reply Oh Prophet PBUH it's too difficult for us and we've not such power to read 1/3 of Quran every night.. Then Prophet Muhammad PBUH said "Listen! read surah Ikhlaas it's 1/3 of the whole quran."

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There's another hadith Sahih Muslim in which Prophet muhammad PBUH once passing a way and listen a person who was reciting the Surah Ikhlaas, Prophet Muhammad pBUh stay there and said " Heaven is become must for this person".

There's another hadith of Masan'd Ahmad in which prophet Muhammad PBUH said " whoever read Surah Ikhlaas 10 times Allah will Confirm a House for him in Heaven. then the companions surprised and said oh Prophet of Allah PBUH so through this we can create many houses in heaven, then Prophet Muhammad PBUH reply that Allah is One who gives more and better"

So read surah Al'Ikhlaas as more as you can it's somewhat special surah in Quran and have most virtue.