Sayyiduna Imran bin Husayn (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said to my father: "How many gods do you worship these days?" He said: Seven, six on the earth and one in the heaven. He (peace and blessings be upon him) said: "So which of them do you hold to for your hope and your fear?" He said: The one in the heaven. He (peace and blessings be upon him) said: "O Abu Husayn, listen: if you accept Islam, I will teach you two phrases that will benefit you." Then, when Husayn accepted Islam, he came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah, teach me the two phrases that you promised me. He (peace and blessings be upon him) said: Say: "O Allah, inspire me with my right guidance, and grant me the right guidance of my soul."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15487
It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is no vow in a matter of sin, and its expiation is the same as the expiation for an oath."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15488