📖 Source: Fatāwā Arkān al-Islām
Nisab of Gold:
- The nisab for gold is 20 mithqāl, which in today’s weight equals approximately 85 grams of gold.
Nisab of Silver:
- The nisab for silver is 140 mithqāl, which — based on the silver dirhams once in circulation in Saudi Arabia — equals the value of approximately 56 riyals.
Weight of the Prophetic Ṣā‘:
- The Ṣā‘ used by the Prophet ﷺ, when measured in modern weight units, equals 2 kilograms and 40 grams of good quality wheat.
Conclusion:
- Gold nisab → ~85g
- Silver nisab → 140 mithqāl (~56 SAR value in old silver currency)
- Prophetic Ṣā‘ → 2.040 kg of wheat
وَالله أعلم بالصواب
