Hadith on Revelation Narrated Umar bin Al−Khattab (R.A)

Narrated `Umar bin Al−Khattab: I heard Allah's Apostle saying,
"Deeds (their correctness and rewards) depend upon intentions,
and every person gets but what he has intended. So whoever
emigrated for worldly benefits, or for a woman to marry, his
emigration is for what he emigrated for."
Sahi Bukhari 1.1