Narrated by Anas bin Malik (may Allah be pleased with him) that Messenger of Allah (peace be upon him) said: “Seeking knowledge is a duty upon every Muslim… [Ibn-e-Majah, Book of Sunnah, Hadith: Sahih At-Targhib wa At-Tarhib, Hadith:
The Prophet (peace be upon him) said: Nobody has ever eaten a better meal than that which one has earned by working with one's own hands. The Prophet of Allah, David used to eat from the earnings of his manual labor. [Reference: Sahih al-Bukhari]
My heart and yours are affected by what flows into them. Guard your ears, eyes, limbs, and your feelings.