1357 – On the authority of ʿUmar (may Allah be pleased with him) who said: “Whenever the Messenger of Allah, peace and blessings be upon him, raised his hands in supplication, he would not lower them until he had wiped his face with them.” It was recorded by al-Tirmidhi (1). The report has corroborating chains, among them the hadith of Ibn ʿAbbās—may Allah be pleased with them both—related by Abū Dāwūd and others (2); taken together, these routes raise it to the level of ḥasan (sound).

Grade of the ḥadīth
Al-Ḥāfiẓ declared it ḥasan, whereas Shaykh al-Islām Ibn Taymiyyah deemed it weak.
Shaykh Ṣiddīq ibn Ḥasan said: “Al-Tirmidhi transmitted it through ʿUmar ibn al-Khaṭṭāb—he said, ‘The Messenger of Allah …,’ and Sunan Abū Dāwūd records a similar narration from Ibn ʿAbbās traced back to the Prophet, peace and blessings be upon him.”
Al-Nawawī remarked: “In the chain of each version there is a weak transmitter.” As for al-Ḥāfiẓ ʿAbd al-Ḥaqq’s claim that al-Tirmidhi labelled the first narration ṣaḥīḥ (authentic), this wording does not appear in the reliable manuscripts of al-Tirmidhi; rather, he said: “a ḥasan gharīb (sound yet singular) narration.”
I say: A gharīb report can still belong to the categories of authentic narrations. Furthermore, the supporting chains mutually reinforce one another, thereby strengthening the ḥadīth as a whole. Many scholars have accordingly upheld its reliability, among them Isḥāq, al-Nawawī in one of his two opinions, Ibn Ḥajar, al-Manāwī, al-Ṣanʿānī, al-Shawkānī, and others.