٣- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ إِسْمَاعِيلَ بْنِ مَرَّارٍ عَنْ يُونُسَ عَنْ مُعَاوِيَةَ بْنِ عَمَّارٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ قَالَ لا بَأْسَ بِالسَّلَمِ فِي الْمَتَاعِ إِذَا سَمَّيْتَ الطُّولَ وَالْعَرْضَ. 
3. Ali ibn Ibrahim has narrated from his father from ‘Isma’il ibn Marrar from Yunus from Mu‘awiyah ibn ‘Ammar who has said the following: “Abu ‘Abd Allah , has said, ‘Advance payment to receive goods in future is lawful if the length and width is made known.’” 