Al-Kāfi

34. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad ibn al-Walid from Yunus who has said the following: “Once I asked al-Rida (a.s.) to instruct me with a concise supplication. The Imam instructed me to say, ‘O the One who has guided me to His Own self and has humbled my heart with its affirmation of His existence, I plead before You for peace and belief.”’