من لا يحضره الفقيه, volume 1, page 331

Hadith.968 - Jahm ibn Abi Jahm narrated that he saw Imam Musa ibn Ja'far (as) performing a prostration after the three rak'ahs of Maghrib prayer. He said: "May I be your ransom! I saw you prostrate after the three [rak'ahs]." Imam (as) replied: "And you observed me doing that?" Jahm said: "Yes." The Imam (as) then said: "Do not abandon it, for the supplication made during it is answered."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.969 - In a narration from Ibrahim ibn Abd al-Hamid, it is mentioned that Imam Jafar ibn Muhammad Al-Sadiq (as) advised a man: “When you are afflicted by distress, place your hand on the spot of your prostration, then wipe your hand over your face starting from the left cheek, then over your forehead, ending at the right cheek.” Ibn Abi Umayr stated that Ibrahim ibn Abd al-Hamid described it to us in the same manner. The Imam continued, “Then say: ‘In the name of Allah (swt), the One besides whom there is no deity, the Knower of the unseen and the seen.. the Most Compassionate, the Most Merciful. O’ Allah (swt), remove from me distress and grief.’” Recite this three times.

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.