The Prophet -- may the blessings of God and His salutations be upon Him -- is stated to have said: "In 'Akká are works of supererogation and acts which are beneficial, which God vouchsafed specially unto whomsoever He pleaseth. And he that saith in 'Akká: 'Glorified be God, and praise be unto God, and there is none other God but God, and most great is God, and there is no power nor strength except in God, the Exalted, the Mighty,' God will write down for him a thousand good deeds, and blot out from him a thousand evil deeds, and will uplift him a thousand grades in Paradise, and will forgive him his transgressions. And whoso saith in 'Akká: 'I beg forgiveness of God,' God will forgive all his trespasses . . . The Apostle of God -- may the blessings of God and His salutations be upon Him -- hath also said: "He that looketh upon the sea at eventide, and saith: 'God is Most Great!' at sunset, God will forgive his sins, though they be heaped as piles of sand. And he that counteth forty waves, while repeating: 'God is Most Great!' -- exalted be He -- God will forgive his sins, both past and future."
Bahá’u’lláh, Epistle to the Son of the Wolf, p. 179 - 181