E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Saadia (Al).
A cuirass of silver which belonged to King Saul, and was lent to David when he was armed for the encounter with Goliath. This cuirass fell into the hands of Mahomet, being part of the property confiscated from the Jews on their expulsion from Medina.