1492. hadíth
وَ سَأَلَهُ إِسْحَاقُ بْنُ عَمَّارٍ: عَنِ اَلسَّخْلِ مَتَى تَجِبُ فِيهِ اَلصَّدَقَةُ قَالَ «إِذَا أَجْذَعَ.
Ishaq ibn Ammar asked him (Imam Jafar ibn Muhammad Al-Sadiq (a.s)) about young lambs: "When does Zakat become obligatory on them?" Imam (a.s) replied: "When they reach the age of jadha' (when they shed their baby teeth)."