1. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Ali ibn al-Hakam from al-‘Ala’ from Muhammad ibn Muslim who has said the following:

“One of the two Imam, (abu Ja’far or abu ‘Abd Allah), ‘Alayhim al-Salam, was asked about foodstuff of high and low quality mixed together. He (the Imam) said, ‘If they see all of it, it is not harmful as long as that of good quality does not cover that of low quality.’”