It was stated in "Falaahi Ssa'il" among the important supplication to be observed after (Asr) afternoon prayer by imitating our master Musa ibn Ja'afar Al-Kazim (peace be upon him) in his dedicated supplication to our master Al-Mahdi (peace and blessing of Allah be on his grand father Muhammad and same to him) as it was narrated by Yahya bn Al-Fadl Naufali, he said: I entered to Abu Al-Hasan, Musa bn Ja'afar after (Asr) afternoon prayer in Baghdad, thus I met him raising his hand to the Heaven and I heard him reciting the following:
اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، اَلْاَوَّلُ وَالْاٰخِرُ وَالظَّاهِرُالْبَاطِنُ، وَاَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، اِلَيْكَ زِيَادَةُ الْاَشْيَاۤءِ وَنُقْصَانُهَا، وَاَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، خَلَقْتَ الْخَلْقَ بِغَيْرِ مَعُوْنَةٍ مِنْ غَيْرِكَ، وَلَاحَاجَةٍ اِلَيْهِمْ، اَنْتَ اللهُ لَا اِلٰهَ اِلَّا اَنْتَ، مِنْكَ الْمَشِيَّةُ وَاِلَيْكَ الْبَدْءُ۔
اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، قَبْلَ الْقَبْلِ وَخَالِقُ الْقَبْلِ، اَنْتَ اللهُ لَاۤاِلٰهَ اِلَّا اَنْتَ، بَعْدَ الْبَعْدِ وَخَالِقُ الْبَعْدِ، اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، تَمْحُوْ مَا تَشَاۤءُ وَتُثْبِتُ وَعِنْدَكَ اُمُّ الْكِتَابِ، اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّاۤ اَنْتَ، غَايَةُ كُلِّ شَيْءٍ وَوَارِثُهُ، اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، لَايَعْزُبُ عَنْكَ الدَّقِيْقُ وَلَا الْجَلِيْلُ، اَنْتَ اللهُ لَاۤ اِلٰهَ اِلَّا اَنْتَ، لَايَخْفٰى عَلَيْكَ اللُّغَاتُ، وَلَاتَتَشَابَهُ عَلَيْكَ الْاَصْوَاتُ۔
كُلَّ يَوْمٍ اَنْتَ فِيْ شَاْنٍ، لَايَشْغَلُكَ شَاْنٌ عَنْ شَاْنٍ، عَالِمُ الْغَيْبِ وَاَخْفٰى، دَيَّانُ الدِّيْنِ، مُدَبِّرُ الْاُمُوْرِ، بَاعِثُ مَنْ فِي الْقُبُوْرِ، مُحْيِ الْعِظَامِ وَهِيَ رَمِيْمٌ، اَسْاَلُكَ بِاسْمِكَ الْمَكْنُوْنِ الْمَخْزُوْنِ، اَلْحَيِّ الْقَيُّوْمِ، اَلَّذِيْ لَايَخِيْبُ مَنْ سَاَلَكَ بِهِ، اَنْ تُصَلِّيَ عَلٰى مُحَمَّدٍ وَاٰلِهِ، وَاَنْ تُعَجِّلَ فَرَجَ الْمُنْتَقِمِ لَكَ مِنْ اَعْدَاۤئِكَ، وَاَنْجِزْلَهُ مَا وَعَدْتَهُ، يَا ذَا الْجَلَالِ وَالْاِكْرَامِ۔
I said to him, whom did you prayed for? He said: to Al-Mahdi of the Prophet's household (peace be on them).
He continue saying: may my father be sacrifice for him, he is having big stomach, his eyebrow are very close, his legs are very energetic, his shoulder is wide, brown in colour and close to be yellowish, may my father be sacrifice for him, his night shall guard the stars by his bowing down and prostration to Allah, may my father be sacrifice for him, he who the blames of those that blame shall not affect before Allah, he is the luminous lamp, may my father be sacrifice for him, he shall rise with the command of Allah.
I said to him, when will he come out? He said: when you saw armies from the city of Anbar in Iraq at the beach of Furat, sirah and Dajlah, and the arch of Kufah is destroy, and burning of some houses in Kufah, when you see all this, verily Allah will act according to His wish, no one can subdue the commandment of Allah and no one can review His Judgement.[1]