It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) (and at times via Sahl bin Sa'd (may Allah be pleased with him)) that Jibril (peace be upon him) came to the Prophet (peace and blessings be upon him) and said: "O Muhammad (peace and blessings be upon him)! Live as long as you wish, for you will certainly die; love whomever you wish, for you will certainly part from him; and do whatever deeds you wish, for you will be recompensed for them." Then he said: "O Muhammad (peace and blessings be upon him)! The honour of the believer is standing (in prayer) at night (tahajjud), and his dignity lies in his being independent of people." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs did not record it. It is known only as the narration of Muhammad bin Humayd from Zafir. Imam Abu Zur'ah narrated it from a trustworthy shaykh via Zafir with the doubt, whereas the narration of Sahl bin Sa'd was transmitted without any doubt.