Hey Sarmad,
Glad you like the post. Yes so for all the official and authentic information I would suggest you go to the official site of usefp which is
http://usefpakistan.org/
USEFP (the body which gives these scholarships) require a minimum of 138 (Quant) out of 170 and a minimum of 136 (Verbal) out of 170 on the GRE. However these are just the minimum scores. As per my observation and experience you must aim for somewhere around 155 on both these sections to have a fair chance of getting in. :-)
Good luck