قُلْتُ لِأَبِي عَبْدِ اللَّهِ ع إِنَّ الْغُرَّةَ تَكُونُ بِثَمَانِيَةِ دَنَانِيرَ وَ تَكُونُ بِعَشَرَةِ دَنَانِيرَ فَقَالَ بِخَمْسِينَ.
Ali Bin Ibrahim, from his father, from Ibn Abu Umeyr, from Jameel Bin Darraj, from Ubeyd Bin Zurara who said, ‘I said to Abu Abdullah asws , ‘The commencement (of the foetus) happens with eight Dinars, and happens with ten Dinars?’ So he asws said: ‘By fifty’.