Pourya-ye Vali

Pahlavān Mahmoud, more commonly known as Pouryā-ye Vali (died 1322 CE), was a Persian pahlevani champion and poet. 
The nickname Pouryā-ye Vali has been attributed to Pahlavān Mahmoud in Khwarazm. The location of his tomb is in Khoy of Iran.
He also wrote a book titled "Kanz ol-Haghayegh" (literally The Treasure of Truths) in Persian. A couplet from him which is sung in Zourkhaneh, is:
افتادگی آموز اگر طالب فیضی
هرگز نخورد آب زمینی که بلند است
Pronunciation:
oftādegi āmooz agar tālebe feyzi, 
hargez nakhorad āb zamini ke boland ast
Literal translation:
Learn modesty if you desire knowledge, 
A high land would never be irrigated