'You will be afflicted with an obscure matter that will leave you with no sign to indicate to the solution, nor a leader to guide the way. None shall be saved from it except the one who recites the 'Supplication of the Drowning Person'. [The narrator says] I asked the Imam, 'What is the Supplication of the Drowning Person?' The Imam replied, ?O Allah, O the Beneficent, O the Merciful, O He who causes the hearts to fluctuate, affirm my heart upon Your religion.'