٤ـ أَحْمَدُ بْنُ إِدْرِيسَ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ إِسْحَاقَ بْنِ عَمَّارٍ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) السَّخْلُ مَتَى تَجِبُ فِيهِ الصَّدَقَةُ قَالَ إِذَا أَجْذَعَ. 
4. Ahmad ibn Idris has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan ibn Yahya from Ishaq ibn ‘Ammar who has said the following: “I once asked abu ‘Abd Allah, ‘Alayhi al-Salam, about lamb when Zakat is obligatory for it. He (the Imam) said, ‘Zakat is obligatory when it becomes Jadha‘ (one year old). 