It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade muhaqalah (selling standing grain in the field in exchange for harvested grain), mukhadarah (selling fruit before it ripens) and munabadhah (making a sale binding by throwing a garment without inspecting it). Ustadh Abu al-Walid said: Mukhadarah means that none of it is to be sold until it turns red or yellow (that is, until it ripens). This hadith has a sahih (authentic) chain, and Imam Bukhari is alone in recording it.

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "It is not permissible to cause harm, nor to return harm for harm. Whoever harms someone, Allah will harm him, and whoever is harsh with someone, Allah will be harsh with him." This hadith has a sahih (authentic) chain on the condition of Muslim, and the two Shaykhs (Bukhari and Muslim) did not record it.