The Prophet (peace and blessings be upon him) said:
"Give (in the way of Allah) little by little as much as you can, and do not hoard (your wealth) by counting it out, or else Allah Almighty will also withhold from you."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 900
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[م ن] عن أسماء بنت أبي بكر. مختصر مسلم ٥٥١.