✅Answer: Please pay attention to the following narrations:

1 عَنْ سَعْدِ بْنِ سَعْدٍ الْأَشْعَرِیِّ قَالَ: سَأَلْتُ أَبَا الْحَسَنِ عَنْ أَقَلِّ مَا تَجِبُ فِیهِ الزَّکَاةُ مِنَ الْبُرِّ وَ الشَّعِیرِ وَ التَّمْرِ وَ الزَّبِیبِ فَقَالَ خَمْسَةُ أَوْسَاقٍ بِوَسْقِ النَّبِیِّ فَقُلْتُ کَمِ الْوَسْقُ قَالَ سِتُّونَ صَاعاً قُلْتُ وَ هَلْ عَلَی الْعِنَبِ زَکَاةٌ أَوْ إِنَّمَا یَجِبُ عَلَیْهِ إِذَا صَیَّرَهُ زَبِیباً قَالَ نَعَمْ إِذَا خَرَصَهُ أَخْرَجَ زَکَاتَهُ.

📚 Al-Kafi, Vol. 3, p. 514

Sa'd said: I asked Abu al-Hasan, peace be upon him, about the minimum amount of wheat, barley, dates, and raisins on which zakat becomes obligatory. The Imam said: Five wasqs, according to the Prophet's wasq, peace and blessings be upon him. I said: How much is one wasq? He said: Sixty sa'.

I said: Is there zakat on grapes, or is it only obligatory on them if they are turned into raisins? He said: Yes! If it is estimated, he gives its zakat!

2 عَنْ سُلَیْمَانَ یَعْنِی ابْنَ خَالِدٍ عَنْ أَبِی عَبْدِ اللَّهِ قَالَ: لَیْسَ فِی النَّخْلِ صَدَقَةٌ حَتَّی یَبْلُغَ خَمْسَةَ أَوْسَاقٍ وَ الْعِنَبُ مِثْلُ ذَلِکَ حَتَّی یَکُونَ خَمْسَةَ أَوْسَاقٍ زَبِیباً.

📚 Al-Tahdheeb, Vol. 4, p. 18

Imam Sadiq, peace be upon him, said: There is no zakat on dates until they reach five wasqs, and grapes are similar, until the amount of its raisins is five wasqs!

3 عَنْ سَعْدِ بْنِ سَعْدٍ الْأَشْعَرِیِّ عَنْ أَبِی الْحَسَنِ الرِّضَا قَالَ: سَأَلْتُهُ عَنِ الرَّجُلِ تَحِلُّ عَلَیْهِ الزَّکَاةُ فِی السَّنَةِ فِی ثَلَاثَةِ أَوْقَاتٍ أَ یُؤَخِّرُهَا حَتَّی یَدْفَعَهَا فِی وَقْتٍ وَاحِدٍ فَقَالَ مَتَی حَلَّتْ أَخْرَجَهَا وَ عَنِ الزَّکَاةِ فِی الْحِنْطَةِ وَ الشَّعِیرِ وَ التَّمْرِ وَ الزَّبِیبِ مَتَی تَجِبُ عَلَی صَاحِبِهَا قَالَ إِذَا صَرَمَ وَ إِذَا خَرَصَ.

📚 Al-Kafi, Vol. 3, p. 523

Sa'd said: I asked Imam Reza, peace be upon him, about a person for whom the time of zakat comes three times a year, should he delay it to pay it at one time? The Imam said: Whenever its time comes, he should give it.

And he was asked about the zakat of wheat, barley, dates, and raisins, when does it become obligatory on its owner? He said: When he harvests and when he estimates!

✅Based on the above narrations and others, one of the items on which zakat is due is raisins, which are dried grapes, and its minimum amount is five wasqs, which is equivalent to 300 sa'.

The time for paying the zakat on raisins is at the time of their harvest, and also when the grapes are estimated to be 300 sa' of raisins, its zakat is paid.

The principle of the obligation of zakat is on raisins, but according to the above narrations and their like, the zakat on grapes that are estimated to be 300 sa' of raisins is also paid as a precaution, even if they are not turned into raisins and are sold and consumed as grapes.

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