بوس الايدين ضحك ع الدقون
Bos el edein dehk ala el doqoun
Translation: Those who kiss your hand are laughing at your beard (i.e. pulling your leg).
Meaning: Don't trust those who act obsequiously around you. The habit of kissing the hands of the powerful and the holy is rare now, but a generation or two ago it was still common, especially in the countryside. The urbanisation and industrialisation of the 1960s ended the rural context in which it had flourished for centuries.
Source: ُEgyptian proverbs, (Al-Ahram Center For Translation and Publishing, 1986) by Ahmed Taymour Pasha,
Translated by: Nabil Shawkat