Those who give Zakaat are successful
Giving Zakaat is included among the qualities described by Allah Most High in Holy Quran of successful worshippers:
Certainly the believers have attained their goal, those who become most humble and submissive in their Prayer, And who (always) keep away from absurd talk, And who (always) pay Zakat (the Alms-due [and keep purifying their wealth and souls]), Surah Mominoon (23:1-4)