It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever buys grain should not sell it before taking possession of it."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "None of you should sell over the sale of his brother," and the Prophet (peace and blessings be upon him) forbade deception in sales, the sale of the unborn offspring of a pregnant animal, and the sale of muzabana. Muzabana means that fruits are sold in exchange for dates by measure, or grapes are sold in exchange for raisins by measure.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) forbade deception in trade.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) commanded that knives should be sharpened beforehand, and that knives should be kept hidden from the animals, and that when any of you is about to slaughter an animal, he should slaughter it quickly (and avoid causing the animal to suffer).

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Make the use of the miswak obligatory upon yourselves, for it is a means of purification for the mouth and a cause of Allah's pleasure."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Allah Almighty likes His concessions to be acted upon just as He dislikes His disobedience."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that I heard the Messenger of Allah (peace and blessings be upon him) say: "In this Ummah too, forms will be transformed. Beware! This will happen to those who deny destiny or are heretics."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that he heard the Prophet (peace and blessings be upon him) say: Once, in a dream, a bowl of milk was brought to me. I drank from it, then I gave the remainder to Sayyiduna Umar (may Allah be pleased with him). Someone asked: O Messenger of Allah! What interpretation did you give to this? The Prophet (peace and blessings be upon him) said: "Knowledge."

Once, Sayyiduna Ibn Umar (may Allah be pleased with them both) saw a shepherd grazing his goats in a filthy place while a better place was available, and Sayyiduna Ibn Umar (may Allah be pleased with them both) had also seen it, so he said: O shepherd! Woe to you, take these goats somewhere else. I heard the Prophet (peace and blessings be upon him) say that every shepherd will be questioned about his flock.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) forbade deception in trade.