Abu Dawud Book 2, Hadith Number 1451.
Chapter : On the reward of reciting the quran.
Narated By ‘Uqbah b. ‘Amir al-Juhani : When we were in the Suffah, the Apostle of Allah (PBUH) asked: Which of you would like to go out every morning to the Buthan or al-‘Aqiq and bring two humped and fat she-camels without being guilty of sin and severing ties of relationship? They (the people) said: Apostle of Allah, we would all like that. He said: If one of you goes out in the morning to the mosque and learns two verses of the Book of Allah, the Exalted, it is better for him then the she-camels, and three verses are better for him than three she-camels, and so on than their numbers in camels.