✅ Answer: Refer to the following narrations:

1⃣ In part of the well-known Ziyarat of Al-Yasin, we say to our master Imam al-Mahdi (peace be upon him):

فَالْحَقُّ مَا رَضِیتُمُوهُ وَ الْبَاطِلُ مَا سَخِطْتُمُوهُ وَ الْمَعْرُوفُ مَا أَمَرْتُمْ بِهِ وَ الْمُنْکَرُ مَا نَهَیْتُمْ عَنْهُ

Translation: So, the truth is what you approve, and falsehood is what you disapprove and consider undesirable. Goodness is what you command, and evil is what you forbid!

📚 Al-Ihtijaj, p. 275

2⃣قَالَ أَمِيرُ الْمُؤْمِنِين لَأَنْسُبَنَّ الْإِسْلَامَ نِسْبَةً لَمْ يَنْسُبْهُ أَحَدٌ قَبْلِي وَ لَا يَنْسُبُهُ أَحَدٌ بَعْدِي إِلَّا بِمِثْلِ ذَلِكَ إِنَّ الْإِسْلَامَ هُوَ التَّسْلِيمُ وَ التَّسْلِيمَ هُوَ الْيَقِينُ وَ الْيَقِينَ هُوَ التَّصْدِيقُ وَ التَّصْدِيقَ هُوَ الْإِقْرَارُ وَ الْإِقْرَارَ هُوَ الْعَمَلُ وَ الْعَمَلَ هُوَ الْأَدَاءُ إِنَّ الْمُؤْمِنَ لَمْ يَأْخُذْ دِينَهُ عَنْ رَأْيِهِ وَ لَكِنْ أَتَاهُ مِنْ رَبِّهِ فَأَخَذَ بِهِ

📚 Al-Kafi, Vol. 2, p. 46

Amir al-Mu'minin (peace be upon him) said: I will explain the lineage of Islam in a way that no one before me has explained, nor will anyone after me explain except in the same manner:

Verily, Islam is submission, submission is certainty, certainty is affirmation, affirmation is confession, confession is action, and action is performance. A believer does not take their religion from their opinion but receives it from their Lord and acts upon it!

3⃣قَالَ الصَّادِقُ : كُلُّ شَيْءٍ مُطْلَقٌ حَتَّى يَرِدَ فِيهِ نَهْيٌ

📚 Al-Faqih, Vol. 1, p. 317

Imam Sadiq (peace be upon him) said: Everything is permissible until there is a specific prohibition!

✅ According to the above narrations, undesirable and prohibited actions are those explicitly forbidden by the Infallibles. Since no actionable text from the Infallibles regarding the undesirability of breastfeeding in a state of impurity has reached us, it cannot be considered undesirable or prohibited. In the commonly used and credible Shia sources, there is no general or specific narration prohibiting breastfeeding in a state of janabah, so there is no basis for a religious prohibition.

✅ You can view some prohibited acts while in a state of janabah at the following link:

https://t.me/porseshvapasokhe/1587

✅ Refer to the following link as well:

https://t.me/porseshvapasokhe/522

✅ In obedience to the command of our master in the narration 'And increase supplication for the hastening of relief,' we say it frequently and abundantly:

اللَّهُمَّ فَصَلِّ عَلَی مُحَمَّدٍ وَ آلِ مُحَمَّدٍ وَ عَجِّلْ لِوَلِیِّکَ الْفَرَجَ وَ الْعَافِیَةَ وَ النَّصْرَ