TABARANI 18399:
from Wāʾil b. Ḥujr —
[Machine] I saw the Prophet ﷺ greet with his right hand and his left hand until the whiteness of his cheek could be seen.
الطبراني ١٨٣٩٩:
عن واءل بن حجر —
«رَأَيْتُ النَّبِيَّ ﷺ يُسَلِّمُ عَنْ يَمِينِهِ وَعَنْ شِمَالِهِ حَتَّى يُرَى بَيَاضُ خَدِّهِ»