The Supplication for Mon. narrated from Imam Sajjad (a.s)
Praise be to God who called none to witness when He created the heavens and the earth, and took no assistance when He created the spirits. Never had He any partner in His Godhead, nor was He ever helped in His Oneness. Tongues are unable to praise Him to the fullest extent, reason incapable of knowing His essence, the mighty humble themselves before His Majesty, their faces bent downward on account of His dread, and all the great submit to His Glory.
Therefore, unto Thee be all praise in increasing succession and unbroken continuance. And may His favor be on His apostle eternally, and peace perpetually, forever. O Lord, let the first part of this my day consist in amendment, the middle of it in prosperity, and the last of it in success. And through Thee I seek refuge from a day which begins in fear, the middle of which causes distress, and which ends in pain.
O Lord, verily I ask Thy pardon for every vow I vowed, every promise I promised and every covenant I made with Thee, and then failed to discharge them. And I pray to Thee concerning wrongs done to Thy creatures; therefore whichever servant of Thine or handmaid of Thine has suffered from me any wrong which I may have done to his person or reputation or property or kith or offspring, or any slander whereby I may have spoken ill of him, or anything I may have imposed on him on account of inclination, or passion, or force, jealousy, or hypocrisy, or prejudice; he being absent or present, alive or dead; and, thereafter my hand become too short and my means too narrow to make amends to him or obtain his forgiveness; in that case, I beg Thee…. O Thou who art the Lord of requests (and they are obedient to Thy will and ready to conform to Thy wish), to confer favor on Muhammad and his Aal (family) and reconcile him to me by whatever means Thou choosest, and let me have mercy from Thee; Verily, pardon causes Thee no loss, nor does bounty injure Thee, O most Merciful. O Lord, grant me on every Monday two gifts from Thee, viz. good luck to obey Thee at the beginning of the day, and the blessing of Thy pardon at the end of it. O Thou who art the only object of worship, and except whom none can forgive sins.