ENOfficial
‘Umar said that when God’s messenger raised his hands in supplication he did not lower them till he wiped his face with them. Tirmidhi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ عُمَرَ رَضِيَ اللَّهُ عَنْهُ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا رَفَعَ يَدَيْهِ فِي الدُّعَاءِ لَمْ يَحُطَّهُمَا حَتَّى يمسح بهما وَجهه. رَوَاهُ التِّرْمِذِيّ
sunnah.com