and Allah said "And proclaim the pilgramage among men; they will come to thee on foot and on every kind of camel. Lean on account of Journeys through deep and distant mountain highways" Surah 22 ~ Al Hajj Part 27
alaq - clot
Revealed in Makkah
Bismillah arak maan nira heem, Alhamdhulillahi Rabil Alamin; arak maan nira heem
Iqra bismi Rabbikallazii khalaq
Khalaqal insaana min alaq
Iqra wa Rabbukul - Akram
Allazii allama bi - qalam
Allamal - insaana ma lam ya'lam
Kalla innal - insaana la yatgaa
Ar - ra aahus - tagnaa
Inna ilaa Rabbikar - ruj - aa
Ara - aytallazi yanhaa
Abdan 'izaa salla?
Ara - ayta in - kanna alal hudaa?
Aw - amara bit - taqwa?
Ara - ayta in - kazzaba wa tawalla?
Alam ya - lam - bi - annal laaha yaara?
Kalla la - illam yanthi lanasfa - am - bin nassiya
Nassiyatin - khazibatin khaati - ah!
Fal - yad - u nadiyah
Sanad 'uz - zabaaniyah!
Kallaa: laa tutti - hu wasjud waqtarib!
In the name of Allah, the Beneficent, the Merciful
Read in the name of your Lord who created you
Created man from a clot
Read and your Lord is most bountiful
Who taught you by the pen
Teaching you that you know not
No, but verily man is rebellious
That he thinks himself independent
Unto your Lord id your return
Have you seen him who dissuades
A slave when he prays?
Have you seen if he (relies) on the guidance
Or enjoys piety?
Have you seen if he denies (Allah's guidance) and is rebellious?
Is he then aware that Allah sees?
No, if he does not cease, we will seize him by the forelock
The lying sinful forelock
Then let him call upon his henchmen!
We will call the guards of hell
No, do not obey him, but prostrate and draw near (to Allah)
Verses 1 - 5 of this Surah were the first direct revelations to Prophet Muhammad (pbuh). The circumstances, material and physical status in which they came are described in Chapters 28 - 30. Please refer.
After that there was an interval (break perhaps?) known as Fatrah, extending over some months or maybe even a year. Surah 68 is considered by many to have been the next revelation in that point of time, however the remainder of this Surah came soon after the fatrah and Verses 6 - 19 have been joined on the first five verses that contain the commands to preach because it explains the main obsticle to the delivery of the message to mankind in light of man's own obstinacy, vanity and insolence!
It has taken science over 1400 years to realise that an embryo indeed begins life as a clot. This sentance alone is the first miracle of Islam and proof that in the absence of technological equipment and know how - Allah revealed the essance of his creation. Taqbir - "Allahu Akbar".