Musnad Ahmad 1167:79

Ibn Numayr narrated to us, from Hisham, from Fatimah bint al-Mundhir, from Asma, that the Messenger of Allah (peace and blessings of Allah be upon him) said to her: "Spend or give, and do not count, lest Allah count against you; or do not withhold, lest Allah withhold from you."