It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "Do not milk the animals of people for your own use without their permission. Would any one of you like that someone goes to his upper room, breaks open the door of his storehouse, and takes everything out of it? Remember! In the udders of people's animals is their food, so the milk of someone's animal should not be milked without his permission."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that I have performed two rak‘ahs with the Noble Prophet (peace and blessings be upon him) before the Zuhr prayer and two rak‘ahs with it, and also after Maghrib, I have performed two rak‘ahs in my house, and after ‘Isha as well, I have performed two rak‘ahs in my house. And Sayyidah Hafsah (may Allah be pleased with her) informed me that the Noble Prophet (peace and blessings be upon him) used to perform two rak‘ahs at the time of the rising of Fajr, when the caller was announcing the prayer (saying the iqamah), and two rak‘ahs after Jumu‘ah in his house.

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: "Do not take the Noble Qur'an with you when going on a journey; I fear that it may fall into the hands of the enemy."

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: "The example of you and the Jews and Christians is like that of a man who hired some laborers and said, 'Who will work from the morning prayer until midday for one qirat?' So the Jews worked from the morning prayer until midday. Then he said, 'Who will work from midday until the afternoon prayer for one qirat?' So the Christians worked. Then he said, 'Who will work from the afternoon prayer until sunset for two qirats each?' Remember! That is you who worked during this period. But the Jews and Christians became angry and said, 'Our labor was so much and the wage so little?' Allah said, 'Did I fall short or diminish anything in giving you your right?' They replied, 'No.' Allah said, 'Then this is My grace, I bestow it upon whom I will.'"

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that once the Noble Prophet (peace and blessings be upon him) saw phlegm stuck towards the qiblah in the mosque. The Noble Prophet (peace and blessings be upon him) stood up and cleaned it, then turned towards the people and, being displeased with them, said: "When any one of you is in prayer, Allah is in front of his face, so none of you should clean his nose in front of his face during prayer."

It is narrated, most likely as a marfu’ hadith, from Sayyiduna Ibn Umar (may Allah be pleased with them both) that whoever says "In sha Allah" while taking an oath, has the choice: if he wishes to fulfill his oath, he may do so, and if he wishes to retract from it, he may do so without becoming a perjurer.

It is narrated, most likely as a marfu’ hadith, from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said:“Perform prayers in your homes as well; do not make them like graveyards.”

Wabra reports that a man asked Sayyiduna Ibn Umar (may Allah be pleased with them both): "If I have donned the ihram for Hajj, can I perform the circumambulation (tawaf) of the House of Allah?" He replied: "What is the harm in that?" The man said: "Actually, Sayyiduna Ibn Abbas (may Allah be pleased with them both) forbids this." Sayyiduna Ibn Umar (may Allah be pleased with them both) replied: "I saw the Noble Prophet (peace and blessings be upon him) that he donned the ihram for Hajj and also performed the circumambulation (tawaf) of the House of Allah and performed sa'i between Safa and Marwah."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) forbade eating several dates together at once without the permission of one's companions.

Sayyiduna Ibn Umar (may Allah be pleased with them both) used to lick his fingers after eating and would say that the Noble Prophet (peace and blessings be upon him) has said: "You do not know in which part of your food there is blessing."