SINCERITY (HADETH) from Riyad-us- saliheen

Umar bin AlKhattab reported Messnger of Allah p.a.hem said 'the deeds are considered by the intentions ; and a person will get the rewired according to his intention .So whoever his emigration for Allah and his Messenger his emigration will be for Allah and His Messenger and whoever emigrated for worldly benefits or for a woman to marry his emigration would be for that he emigrated for (Al- Bukhari and Muslim)