Sahih Al Bukhari Hadith Number 1519

Narrated Abu Huraira: The Prophet (peace be upon him) was asked, “Which is the best deed?” He said, “To believe in Allah and His Apostle.” He was then asked, “Which is the next (in goodness)?” He said, “To participate in Jihad in Allah’s Cause.” He was then asked, “Which is the next?” He said, “To perform Hajj-Mabrur. “