Congealed Blood (Arabic: العلق‎, al-ʻalaq, aka "The Clot" or "The Clinging Thing"), is the 96th chapter (surah) of the Qur'an. It is composed of 19 verses (ayat). It is sometimes also known as Surah Iqra (سورة إقرا, "Read").

Chapter 96 is traditionally believed to have been Muhammad's first revelation. While on retreat in the Cave of Hira, located at Mountain Jabal al-Nour near Mecca, Gabriel appears before Muhammad and commands him to “Read!”. He responded, “But I cannot read!”. Then the angel Gabriel embraced him tightly and then revealed to him the first lines, “Read: In the name of your Lord Who created, (1) Created man from a clot. (2) Read: And your Lord is the Most Generous, (3) Who taught by the pen, (4) Taught man that which he knew not.” (Bukhari 4953). It is traditionally understood the first five ayats (1–5) of Surah Alaq were revealed, however this is not the first fully complete Surah to be revealed and was actually revealed in 3 parts.

Source of translation and meaning of this sura: islamicfinder.org
audio source: www.mp3quran.net