Rajab Dua after obligatory prayers

The following dua is recommended after the daily obligatory prayers in the month of Rajab. The dua, according to Shaykh Abbas Qummi in Mafateehul Jinaan has been taught by Imam Jafar as-Sadiq (a). Sayyid Ibn Tawus has narrated that Muhammad ibn Dhakwan—known as al-Sajjad due to his long prostrations during which he used to weep so heavily that he lost his sight asked Imam Jafar al-Sadiq (a.s), saying, “May Allah accept me as ransom for you! We are now in Rajab; please teach me a supplication due to which Almighty Allah may help me.” Whereupon, the Imam (a.s) asked him to write down the following dua

بِسْمِ ٱللَّهِ ٱلرَّحْمٰنِ ٱلرَّحِيمِ
In the name of Allah, the Beneficent, the Merciful
صَلِّ عَلَى مُحَمَّد وَآلِهِ
O Allah, bless Muhammad and his household
يَا مَنْ أَرْجُوهُ لِكُلِّ خَيْرٍ،
O He Whom alone I hope for all good things;
وآمَنُ سَخَطَهُ عِنْدَ كُلِّ شَرٍ ،
And I am safe from His anger at every evil.
يَا مَنْ يُعْطِي الْكَثِيرَ بِالْقَلِيلِ،
O He who gives a lot in exchange of a little.
يَا مَنْ يُعْطَي مَنْ سَأَلَهُ
O He who gives to one who asks Him.
يَا مَنْ يُعْطي مَنْ لَمْ يَسْأَلْهُ وَمَنْ لَمْ يَعْرِفْهُ تَحَنُّناً مِنْهُ وَرَحْمَةً،
O He who gives to one who does not ask Him and does not know Him, Out of His affection and mercy.
أَعْطِنِي بِمَسْأَلتِي إيَّاكَ جَمِيعِ خَيْرِ الدُّنْيَا،
Give me, for my request is only to You alone, All the good of this world
وَجَمِيعِ خَيْرِ الآخِرَةِ،
and all the good of the Hereafter.
وَاصْرِفْ عَنّي بِمَسْألَتي إيَّاكَ جَميعَ شَرِّ الدُّنْيا وَشَرِّ الآخِرَة
Keep away from me, for my request is only to You alone, All the evil of this world and the evil of the Hereafter.
فَإنَّهُ غَيْرُ مَنْقُوصٍ مَا أَعْطَيْتَ،
For indeed it is not diminishing what is given by You.
وَزِدْنِي مِنْ سَعَةِ فَضْلِكَ يَا كَرِيمُ.
Increase (for) me from Your bounty, O The Generous
The narrator then added that Imam al-Sadiq (a.s), then, grasped his beard with his left hand, while reciting this supplication, and moved ceaselessly his forefinger of his right hand. He then uttered the following:
يَا ذَاَ الْجَلالِ وَالإكْرَامِ،
O The Sublime and The Distinguished,
يَا ذَاَ النَّعْمَاءِ وَالْجُودِ،
O The Bountiful and The Magnanimous,
يَا ذَاَ الْمَنِّ وَالطَّوْلِ،
O the Gracious and the Mighty,
حَرِّمْ شَيْبَتِي عَلَى النَّارِ.
Save my grey hairs of the beard from the fire (of Hell)