All the friends of God ... should contribute to the extent possible, however modest their offering may be. God doth not burden a soul beyond its capacity. Such contributions must come from all centers and all believers. ... O Friends of God! Be ye assured that in place of these contributions, your agriculture, your industry, and your commerce will be blessed by manifold increases, with goodly gifts and bestowals. He who cometh with one goodly deed will receive a tenfold reward. There is no doubt that the living Lord will abundantly confirm those who expend their wealth in His path.
O God, my God! Illumine the brows of Thy true lovers, and support them with angelic hosts of certain triumph. Set firm their feet on Thy straight path, and out of Thine ancient bounty open before them the portals of Thy blessings; for they are expending on Thy pathway what Thou hast bestowed upon them, safeguarding Thy Faith, putting their trust in their remembrance of Thee, offering up their hearts for love of Thee, and withholding not what they possess in adoration for Thy Beauty and in their search for ways to please Thee. O my Lord! Ordain for them a plenteous share, a destined recompense and sure reward. Verily, Thou art the Sustainer, the Helper, the Generous, the Bountiful, the Ever-Bestowing.
(‘Abdu’l-Bahá, Bahá’í Prayers, p. 83)