Mustard Seed

An act, however infinitesimal, is, when viewed in the mirror of the knowledge of God, mightier than a mountain. Every drop proffered in His path is as the sea in that mirror.

Bahá’u’lláh, Quickeners of Mankind, p. 4

Every spotless action, every sincere intent of ours will win the commendation of the True One, will be exalted and magnified by Him, and requited with a bounteous recompense.

Shoghi Effendi, The Compilation of Compilations vol II, p. 351-352