Al-Kāfi
Hadith 1768بَعْضُ أَصْحَابِنَا عَنْ مُحَمَّدِ بْنِ عَبْدِ الْحَمِيدِ عَنْ سَيْفِ بْنِ عَمِيرَةَ عَنْ مَنْصُورٍ عَنِ ابْنِ أَبِي يَعْفُورٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ إِذَا زَادَ الطِّلَاءُ عَلَى الثُّلُثِ أُوقِيَّةً فَهُوَ حَرَامٌ .
9. Certain persons of our people have narrated from Muhammad ibn ‘Abd al-Hamid from Sayf ibn ‘Amirah from Mansur from ibn abu Ya‘fur who has said the following: “If al-Tila’ is more than one-third even by one ritl (a certain unit of measurement) it then is unlawful.’”