Give Charity As Much As You Can Afford.

Narrated Asma' bint Abu Bakr (RA)

The Prophet Mohammad (SAW) said: "Do not shut your money bag; otherwise Allah (SWT) too will withhold His Blessings from you. Spends (in Allah's Cause) as much as you can afford."

[Sahih Al-Bukhari - Book of Zakat, chapter 14]