✅ Answer: Some of the practices of the month of Rajab are:

1 Abi Mu'ashar said: When the month of Rajab began, Imam al-Sadiq (peace be upon him) would recite this supplication every day of Rajab:

خَابَ الْوَافِدُونَ عَلَی غَیْرِکَ وَ خَسِرَ الْمُتَعَرِّضُونَ إِلَّا لَکَ وَ ضَاعَ الْمُلِمُّونَ إِلَّا بِکَ وَ أَجْدَبَ الْمُنْتَجِعُونَ إِلَّا مَنِ انْتَجَعَ فَضْلَکَ بَابُکَ مَفْتُوحٌ لِلرَّاغِبِینَ وَ خَیْرُکَ مَبْذُولٌ لِلطَّالِبِینَ وَ فَضْلُکَ مُبَاحٌ لِلسَّائِلِینَ وَ نَیْلُکَ مُتَاحٌ لِلْآمِلِینَ وَ رِزْقُکَ مَبْسُوطٌ لِمَنْ عَصَاکَ وَ حِلْمُکَ مُعْتَرِضٌ لِمَنْ نَاوَاکَ عَادَتُکَ الْإِحْسَانُ إِلَی الْمُسِیئِینَ وَ سَبِیلُکَ الْإِبْقَاءُ عَلَی الْمُعْتَدِینَ اللَّهُمَّ فَاهْدِنِی هُدَی الْمُهْتَدِینَ وَ ارْزُقْنِی اجْتِهَادَ الْمُجْتَهِدِینَ وَ لَا تَجْعَلْنِی مِنَ الْغَافِلِینَ الْمُبْعَدِینَ وَ اغْفِرْ لِی یَوْمَ الدِّین

📚 Bihar al-Anwar, vol.98, p.389

2 Yunus ibn Zubyan said: I was with Imam al-Sadiq (peace be upon him) when Ma'li ibn Khunis entered, and it was the month of Rajab. They discussed supplications for Rajab. Ma'li said: 'O my master, teach me a supplication that contains everything the Shi'a have entrusted in their books.' The Imam replied: 'O Ma'li, say:'

اللَّهُمَّ إِنِّی أَسْأَلُکَ صَبْرَ الشَّاکِرِینَ لَکَ وَ عَمَلَ الْخَائِفِینَ مِنْکَ وَ یَقِینَ الْعَابِدِینَ لَکَ اللَّهُمَّ أَنْتَ الْعَلِیُّ الْعَظِیمُ وَ أَنَا عَبْدُکَ الْبَائِسُ الْفَقِیرُ وَ أَنْتَ الْغَنِیُّ الْحَمِیدُ وَ أَنَا الْعَبْدُ الذَّلِیلُ اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ وَ عَلَی آلِ مُحَمَّدٍ وَ امْنُنْ بِغِنَاکَ عَلَی فَقْرِی وَ بِحِلْمِکَ عَلَی جَهْلِی وَ بِقُوَّتِکَ عَلَی ضَعْفِی یَا قَوِیُّ یَا عَزِیزُ اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ وَ آلِ مُحَمَّدٍ الْأَوْصِیَاءِ الْمَرْضِیِّینَ وَ اکْفِنِی مَا أَهَمَّنِی مِنْ أَمْرِ الدُّنْیَا وَ الْآخِرَةِ یَا أَرْحَمَ الرَّاحِمِینَ

Then he said: 'O Ma'li, by God, this supplication gathers for you all that has been from the time of Abraham, the Friend of God, until the time of Muhammad (peace be upon him and his family).'

📚 Bihar al-Anwar, vol.98, p.390

3 Muhammad Sajjad said: I said to Imam al-Sadiq (peace be upon him): 'I sacrifice myself for you, this is the month of Rajab, teach me a supplication that God may benefit me with.' The Imam said: 'Write it down:'

بِسْمِ اللَّهِ الرَّحْمنِ الرَّحِيم

Recite this supplication every day of Rajab, in the morning and at the end of the day (or beginning of the night) and after your prayers during day and night:

یَا مَنْ أَرْجُوهُ لِکُلِّ خَیْرٍ وَ آمَنُ سَخَطَهُ عِنْدَ کُلِّ شَرٍّ یَا مَنْ یُعْطِی الْکَثِیرَ بِالْقَلِیلِ یَا مَنْ یُعْطِی مَنْ سَأَلَهُ یَا مَنْ یُعْطِی مَنْ لَمْ یَسْأَلْهُ وَ مَنْ لَمْ یَعْرِفْهُ تَحَنُّناً مِنْهُ وَ رَحْمَةً أَعْطِنِی بِمَسْأَلَتِی إِیَّاکَ جَمِیعَ خَیْرِ الدُّنْیَا و جَمِیعَ خَیْرِ الْآخِرَةِ وَ اصْرِفْ عَنِّی بِمَسْأَلَتِی إِیَّاکَ جَمِیعَ شَرِّ الدُّنْیَا وَ شَرِّ الْآخِرَةِ فَإِنَّهُ غَیْرُ مَنْقُوصٍ مَا أَعْطَیْتَ وَ زِدْنِی مِنْ فَضْلِکَ یَا کَرِیمُ

Then the Imam drew his left hand across his beard and struck it, and while moving his right index finger in supplication (left and right), he recited this prayer:

یَا ذَا الْجَلَالِ وَ الْإِکْرَامِ یَا ذَا النَّعْمَاءِ وَ الْجُودِ یَا ذَا الْمَنِّ وَ الطَّوْلِ حَرِّمْ شَیْبَتِی عَلَی النَّارِ

📚 Bihar al-Anwar, vol.98, p.390

4 قال أَبُو الْحسن مُوسَى بْنُ جَعْفَرٍ رَجَبٌ نَهَرٌ فِي الْجَنَّةِ أَشَدُّ بَيَاضاً مِنَ اللَّبَنِ وَ أَحْلَى مِنَ الْعَسَلِ فَمَنْ صَامَ يَوْماً مِنْ رَجَبٍ سَقَاهُ اللَّهُ مِنْ ذَلِكَ النَّهَر

📚 Al-Faqih, vol.2, p.92

Imam al-Kazim (peace be upon him) said: Rajab is a river in Paradise, whiter than milk and sweeter than honey. Whoever fasts one day of Rajab, God lets him drink from that river.

5 قال أبوالحسن موسى بن جعفر رَجَبٌ شَهْرٌ عَظِيمٌ يُضَاعِفُ اللَّهُ فِيهِ الْحَسَنَات و يَمْحُو فِيه السَّيِّئَات مَنْ صَامَ يَوْماً مِنْ رَجَبٍ تَبَاعَدَتْ عَنْهُ النَّار مَسِيرَةَ سَنَةٍ و مَنْ صَامَ ثَلَاثَةَ أَيَّامٍ وَجَبَتْ لَهُ الْجَنَّةُ

📚 Al-Faqih, vol.2, p.92

Imam al-Kazim (peace be upon him) said: Rajab is a great month; God multiplies good deeds and erases sins. Whoever fasts one day of Rajab, the fire is kept away from him for a distance equivalent to a year; whoever fasts three days, Paradise becomes obligatory for him.

✅ Many hadiths mention the virtue of fasting throughout Rajab, especially the first, middle, and twenty-seventh days, in Shi'a hadith collections.

✅ For those unable to fast, giving a piece of bread in charity for each day of Rajab is mentioned in Al-Amali, p.443.