Hadith 5830
Mishkat al-Masabih
Excellent Qualities and Description of the Prophet · His Character and Natural Disposition - Section 2
Arabic
وَعَنْ عَبْدِاللَّهِ بْنِ سَلَامٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا جَلَسَ يَتَحَدَّثُ يُكْثِرُ أَنْ يَرْفَعَ طَرْفَهُ إِلَى السَّمَاء. رَوَاهُ أَبُو دَاوُد
English translation
`Abdallah b. Salam said that when God's messenger sat talking he would often raise his eyes to the sky. Abu Dawud transmitted it.